I have a 13" MacBook Air with Yosemite 10.10.2 installed:
As soon as I connect it to my WiFi, I get a very high ping (1600 ms) on both my machines: Windows 7 PC and my MacBook. As a result browsing becomes very difficult. I ping 220.127.116.11!
But if I disconnect my MacBook ping becomes normal (70-80 ms) on Windows PC. I've checked ping by disconnecting my PC, restarted my modem-router, switched off Bluetooth on my Mac.
I've a modem + router D-Link 2750u on the ground floor wired to TP Link 740N on the first floor. I've tried connecting only to 2750u also by switching off 740N. I've been using this setup for last 4-5 months, but the issue has started since couple of weeks back.
What else I've tried:
- Setting DNS to 18.104.22.168 and 22.214.171.124
- Deleting cache.db file from com.apple.safari
- Booted in safe mode and restarted back. In safe boot mode I get the usual ping of 70-80 ms but after restarting and booting in normal mode the ping returns back to 1600 ms.
How do I solve this issue?