I've been having this problem with overwatch that has been annoying. I made 2 hwinfo log files. One while playing overwatch when the problem wasn't happening and one when the issue was occuring (it either works fine all day or is a problem all day) could someone look at these log files and see if they notice anything.
Sorry, but I cannot see any files attached. Also please describe more precisely what is the problem you see.
In the "bad case" I can see one thing that should not be - the On-Demand Clock Modulation is activated at 62.5%, which means your CPU is throttled to only 62.5% of its rated clock and thus runs at reduced performance. Since your temperatures seem OK, I don't see a reason to activate it.
If you aren't using some tool that could activate this throttling (e.g. ThrottleStop), then I think it might be the BIOS. This was a common practice for some notebook manufacturers to active this kind of throttling to keep temperatures down. But since you haven't even provided details about your system configuration, I'm not sure if that's the case.
Anyway, if you're sure you don't have a tool running that could activate it, I'd suggest to contact your system vendor.
Hmm, then I guess the BIOS is activating the throttling.
If you aren't using ThrottleStop, you might try it - it might help to solve the problem.