All Questions
Tagged with hang or performance
1,583 questions
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Macbook Pro 16" (2019 with i9 processor) performing terribly when connected to an external monitor
I've been using my macbook pro with an external monitor for about 1 year now. In the past few weeks though, I'm struggling doing so because my macbook performance drops as soon as I connect it to my ...
- 121
-1
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1
answer
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How can I test the sustained write speed of a drive on macOS?
I would like to get an idea of the sustained read and write speeds of a drive that I have connected to my Mac. As you may know, most drives do not consistently read and write at the same speed as it ...
- 9,234
1
vote
1
answer
129
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iMac that slow - is that normal?
I have a iMac Retina4K from the end of 2015 with 3.1GHz Quad-Core i5 and 8GB DDR3 on 21" with a second monitor attached, and a HDD-disk. macOS is Catalina and I am running Firefox, Adobe InDesign ...
- 133
1
vote
0
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31
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iPhone froze during a software update
I plugged my iphone to my mac to update ios to 14.6. During the update when my mac was "preparing the iphone for the update", the wire came unplugged, after which the mac said there was a ...
- 361
4
votes
1
answer
3k
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Why are "spindump" and "sandboxd" eating up all my CPU?
I am using MacOS Big Sur 11.3 on a 2019 MacBook Pro. Recently, I started noticing that some programs (specifically MATLAB) have been running really slow, the cursor and mouse are lagging, etc. ...
- 363
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1
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102
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Need help configuring specs for new Mac and my software needs [closed]
I have to buy a new Mac and I have two programs I'm hoping to optimize with the new set up. I know I can ask them in the Apple store but I know there's a lot of smart peeps on here so would love any ...
- 59
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2
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827
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Performance on Parallels shared folders
I using windows 10 x64 virtual machine on Parallels on macos on macbook pro 16" 16G of memory (last year model). I configured the vm to use all CPU 16 cores and 6G of memory.
On windows I do Qt/C+...
- 753
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answers
853
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Finder freeze when I go to any iCloud folder
Whenever I try to open any iCloud folder from the sidebar, Finder freeze and I have to restart it from the force stop window.
The only iCloud folder I can open is the main iCloud Drive folder, but it'...
- 143
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0
answers
352
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Macbook Pro locks up after lid closed for a while
I was given an A1398 (Macbook Pro 15" Retina Mid-2015) and am experiencing frequent freezes after the lid is closed for a while, assuming the computer is in sleep mode.
The freeze after opening ...
- 113
8
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1
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10k
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Mac book pro 16 slows down completely when connected to an external monitor [duplicate]
I have a Macbook Pro 16" and recently purchased a 24" (HD) Dell monitor via HDMI (via a USB-C to HDMI converter)
After about 20m of usage, my mac comes to a crawl and really slows down.
It ...
- 509
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answers
40
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macOS Keynote, Pages, Numbers, and Microsoft Office apps will not open [duplicate]
From time to time out of the blue all these apps stop open. Other apps like Transmission, Safari, VLC and Mail seem fine as do other preinstalled apps.
Until recently after the system restart ...
- 65
9
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2
answers
6k
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How to execute terminal command on energy efficient cores on M1 chip?
I want to run nodejs process on E cores, but when I run it I see that it uses P cores even if there is a 0.3 second task.
- 193
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1
answer
58
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Would increasing RAM in a MacMini6,1 (2012) improve performance of MAME?
I am trying to run a recent build of MAME on a Mac Mini from 2012 (MacMini6,1) that has 8GB of RAM installed in it (2x4G) and an SSD. I've found that under Mojave, MAME runs but slows down on a ...
- 2,624
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1
answer
55k
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How do you exit guided access when it freezes?
I accidentally entered guided access by clicking the home button on my phone 3 time while I was on the app "Snapchat" and now I can not leave the app. I have tried clicking the home button ...
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146
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How do I diagnose a slow Mac from command line? (OS X El Capitain)
I have a very old (I think circa 2009) Mac Mini, which effectively just acts as a NAS for our TimeMachine backups these days. It was working fine until about 2 days ago, when all of a sudden those ...
- 101
1
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1
answer
158
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RAID drive over-full, bringing laptop to a crawl & crashing it, need to triage and delete files
I'm helping a friend try to restore functionality to his MacBook and LaCie 5big Thunderbolt 2 RAID array. He's been editing a film and over time the RAID device has filled completely up. I'm not sure ...
- 151
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0
answers
115
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iMac screen freezes (audio/mic/etc still function but video freezes)
I've been having a few odd issues with a new iMac. Screen will freeze occasionally (as will my camera if I'm on a video call) but my microphone, audio, and mouse will still move. If it happens on a ...
- 111
1
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0
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811
views
How to tell what Safari tab requires high performance GPU?
I'm experiencing lower than expected battery life on my 2015 Macbook Pro. I believe that part of the problem is that the High Performance GPU is being activated when not needed by some tab in Safari:
...
- 622
2
votes
1
answer
61
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What exactly happened with Apple throttling iPhones? [closed]
I'm doing a business report on Apple Inc. and I'm on the legal issues section and I have to list and describe a few recent (last ~5-10 yrs) issues/lawsuits that the company faced. So far a major one ...
- 145
3
votes
1
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1k
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Get notifications for high CPU usage
My new laptop has an M1 chip and no fan, and this is great, but it also makes it hard for me to find out when the CPU has been running high (and consuming more battery than usual).
How can I make it ...
- 153
1
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1
answer
127
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Why does Pages constantly freeze on a particular pages document
I'm writing a report (4000 words)on Pages in the past few days. However, since this afternoon, after I added a new picture to the report, this report has been constantly unresponsive whenever I scroll ...
- 123
2
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0
answers
1k
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Why is my iMac slowing down under multiple users?
Hardware: I have a 2014 iMac 5K. It's got 24GB of RAM and a 2TB SATA SSD I installed myself last summer. Full specs here: https://support.apple.com/kb/SP707?locale=en_US
Software: Catalina 10.15.7 is ...
- 165
1
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1
answer
547
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How to optimize the time taken to iterate over 200 Reminders using AppleScript/osascript?
The script below works as expected, but takes 18 seconds to iterate over 180 Reminders when run from the command line using osascript.
Worse, this same script takes only 2-3 seconds when run from ...
- 163
1
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2
answers
2k
views
Slow transfer between two external drives
Copying data to a USB external drive is much slower than expected.
I have a 6TB external RAID drive that holds my photos, and I'm trying to do an archive copy of this data to another external USB ...
- 193
1
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0
answers
332
views
Does serverperfmode work on Apple Silicon Macs?
Is it possible to enable serverperfmode on an Apple Silicon Mac?
I am using an M1 Mac Mini on macOS 11.2, and following Apple's instructions. I enabled serverperfmode=1 in the NVRAM boot-args, and ...
- 201
6
votes
1
answer
28k
views
CPU and RAM usage statistics for iPhone/iOS (similar to Activity Monitor)?
Is there any (preferably free) way to view CPU and RAM usage by process (e.g. app) on iPhone without jailbreaking the device?
Activity Monitor on macOS displays
Process Name
% CPU (per core I believe)...
- 5,395
0
votes
0
answers
51
views
Macbook is freezing and restarting again and again
I am using a Macbook Pro 16 inch 2019 with macOS Big Sur version 11.2.3. My macbook randomly freezes mid screen and I can't move the cursor. Then it restarts all by itself with a whirring sound(...
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1
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5k
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Stuck on login for one user after migration assistant
I recently got my MacBook Air 2018 fixed after having some cryptographic error.
I backed up all my data with time machine and I was able to transfer my data using migration assistant. I now have 3 ...
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10
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4
answers
7k
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How can I tell if all USB-C ports on a 2020 M1 MacBook Pro are the same speed, or if one or more will be faster than others?
I'm doing some heavy copying of files, and wish to do it via the fastest USB-C connection possible.
I tried holding option and clicking on the apple logo on the very top left, then going to System ...
- 5,395
2
votes
1
answer
410
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Macbook Pro 2015: Cursor/screen freezes after login, runs only in safe mode
my MacBook Pro (Retina, 13-inch, Mid 2014) Big Sur 11.2.2 freezes regularly after login. I can only run it in safe mode. I had the problem before the update to Big Sur, I updated it hoping it would ...
1
vote
1
answer
2k
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WindowServer and kerneltask using a lot of CPU in Big Sur
I have seen these two questions
WindowServer high CPU usage, spikes when moving cursor on M1 MacBook Big Sur
MacBook Pro - High CPU Under Low Workload
and I have the same problem with WindowServer on ...
- 3,484
10
votes
2
answers
1k
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Big Sur - unresponsive dialogs to mouse actions
Sometimes at the beginning of 2021, I started to have a problem with the "File upload" dialogs in the web browser. The dialog is unresponsive to the mouse. I can use the keyboard for ...
- 215
2
votes
1
answer
553
views
Reinstall MacOS or/vs Reformat?
My current install of Catalina has gone a bit wonky. Every other time I start it up it displays the circle with a line through it, so I do a hard restart and it will then boot into Catalina.
I'm ...
- 899
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votes
0
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53
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"Hang In The Main Graphics Engine"
Mac: MacBook Pro, mid2012, 9,1 Core i7 2.3Ghz, 16 GB RAM, 1TB SSD, nVidia 650M, IntelHD 4000
I use several macOS systems incl. the default one - Lion. 2 weeks ago slowdowns began to occur - apps slow ...
- 21
10
votes
3
answers
19k
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MacBook Pro (16-inch, 2019) thermal issues
A few months ago I got a 16-inch MacBook Pro (A2141) with 32GB ram and Core i9 (I9-9980HK) 2.4 GHz processor.
My problem is that that it overheats very quickly and drop the performance of the CPU to ...
- 225
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votes
1
answer
65
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Bandwidth throttling / simulation for selected host
I can control the network for the whole device with Network Link Conditioner but is there a way to do it just for selected hosts? I know that with /etc/hosts I can totally block connection to a host, ...
- 101
1
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2
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392
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Will an iPad with more RAM experience fewer app suspensions? [closed]
My workflow requires me to frequently switch back and forth between Google Docs and other apps and this leads to my Google doc being repeatedly closed.
My understanding is that the cause is “app ...
- 887
0
votes
1
answer
492
views
Midnight commander freezes when lynx navigation is used in a quick fashion
As a wrote in the title I use MC on Mac because I just like it and it is a very effective tool, especially with lynx-like navigation. But it gets frozen randomly when I use it basically running ...
- 193
0
votes
1
answer
394
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Principle of resolution scaling via External monitor (GPU performance)
I will demonstrate my idea on a 4K monitor, there are 4 options:
Native 4K
1692p
1440p
1080p
From What I undersrand, the 4K and 1080p should be on par when it comes to the GPU demands as the 1080p ...
- 133
2
votes
2
answers
3k
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High CPU usage in Chrome/Opera
When I open 1-2 tabs with sites that have many images (e-shop as an example) the CPU usage gets to 100% for Chrome/Opera/Firefox.
What I've tried:
Reset Chrome to default settings
Disabled all ...
- 131
3
votes
0
answers
427
views
Why is webdavfs_agent consuming 100% of CPU?
I'm getting very high CPU usage whenever I access a WebDAV shared drive (in Mac OS Big Sur v11.1, running on a 2019 MacBookPro 16").
My employer uses a WebDAV server for shared files, and I ...
- 131
2
votes
0
answers
992
views
MacBook Pro - High CPU Under Low Workload
I've got the MacBook Pro 16" 2019 (2.3 GHz 8-Core Intel Core i9, AMD Radeon Pro 5500M 4 GB). Since upgrading to macOS Big Sur, I've been experiencing an issue whereby the system will become ...
- 143
5
votes
1
answer
542
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TCC is causing my mac to freeze for 5-20 seconds sporadically throughout the day. How can I fix it?
Sporadically throughout the day while I'm working on my 2017 27" iMac running macOS 10.14.6, the entire system will freeze for 5-20 seconds. There doesn't seem to be any rhyme or reason to it, ...
- 2,760
7
votes
11
answers
6k
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How to determine if my 2015 MacBook Pro can still handle current workloads?
I work in a company since 2015 and when I joined I was handed over a new MacBook which was the latest at that time i.e 2015 Mid model i7 16GB Ram. This company does not have a rotation policy for the ...
- 255
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votes
1
answer
94
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New iMac freezing every click
I bought this iMac 6 months ago, model late2019, with 64gb RAM and fusion HD 3TB
I ran all the utility tool and I get a lot of MT mapping warnings when i run the First Aid, but they don't seem to be ...
- 101
18
votes
1
answer
7k
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Xcode 12.3 is not responding a few seconds after opening it
I updated to Xcode 12.3 on my MacBook Pro 2018 13" yesterday and face a strange problem right now.
Problem: Every time I open up Xcode, it will first work fine. However, after a few actions / ...
- 335
1
vote
1
answer
215
views
How to make my iPhone 7 faster (at least decent)
I have iPhone 7, with the latest iOS. It was slower and I thought it was because of many apps. I formatted it and use essential apps but it has not made it faster. Last year I had its battery changed ...
- 333
0
votes
1
answer
325
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Name: Tags: Where: image frozen on my MacBook Air desktop
I took a screen shot using Command+5 and apparently tapped "Record Selected Section". That screen shot icon is frozen on my desktop.
I have tried opening Terminal and typing:
Killall finder
...
- 1
1
vote
0
answers
69
views
macOS Mojave is randomly becoming slow, unable to start/close programs
Is there's way to live disc of mac on an usb or to partially reset an mac to default drivers or perform the equivalent of doing a system refresh without reinstalling an mac?
To give some context, my ...
- 111
1
vote
0
answers
61
views
Performance effect of dual-booting with APFS partitions
I have a 2013 iMac with a fixed disk, not an ssd. For unrelated reasons, I dual-boot it with two separate copies of macOS Catalina that share space in the same APFS container. Without knowing much ...
- 275