I'm new user of a brand new 15" Mid 2015 MacBook Pro (i7 processor), which I got about a month ago. I've been having problems with performance.
Every time I try to do anything more CPU consuming than browsing the internet (for example opening a project in IntelliJ or compiling a Java project), my Mac becomes extremely slow.
I noticed that CPU is working on 800 MHz frequency but CPU temperature is low. Fans stay quiet all the time (~2000 rpms). When I need power from my CPU it slows down, but I don't think it should.
I also tried SMC reset but no result. Does it look like hardware failure?
Example of Activity monitor processes listing while throttling below. After longer build Idle is almost 0%, temperature is okay, frequency is 800MHz. Process kernel_task is sometimes using much more CPU