it could be that you are being throttled due to heat from the cpu being hit that hard...although you did say you have a gpu installed if AM takes advantage of that I have no idea...What is the resolution of your videos? kinda difficult to run 1080p (or whatever) videos at four eight or sixteen at a time...
and do they need to be hi-rez for a small preview screen? After all most of these games didn't even run higher than 800x600 Although for the video screensaver maybe I would understand you want them to look good..but you could lower the monitor resolution as well so they don't looked stretched and stuff *shrugs*
try that and see if that helps...
It is reasonably software based the cause of the problem, yeah my hardware is not that young any more, but still running pretty fine. I am an IT tech so I build all my own etc.
You really need to use the module Conveyor, to increase the speed slightly even though that is still not 100% perfect, it was running great yesterday, but I have added extra code on top of that, and it seems to stutter a bit, so that might be down to me, I noticed that I had shut downs when I was using game information in the skin, so that might need to be put at the top of the code and load into array's and not on the fly reading.
However I just checked and no sign of any video codecs, so they might be hardware encoded, it would have been fantastic to have been able to use your own.
I can game on RPCS3 (PS3 emu) at 4K resolution for some games with no problems, but sadly no updates to AM since 2020 I think it was, hopefully the developer has not given up, as he has a great front end here (so far from my testing)
Regards
Mark