2015 macbook pro 15' retina overheating %500 cpu "Thermal Throttling" FIXED!!
my old 2015 model constantly overheated to the point of being unusable with CPU running at up to %600 (only with a monitor connected).. UNTIL NOW!
For anyone who has lived through thermal throttling of this kind, i swear, the answer is thermal paste! it's like a new machine. It's a cheap and easy DIY too!
I had to share the result because there's many suggestions out there and I've wasted weeks trying software fixes, I also spoke with Apple many times both in and out of warranty and they never were able to fix it, let alone acknowledge the issue.
I used the video in the link below,
MacBook Pro 15″, macOS 10.13