The limiter regarding power of your GPU is enabled when is reaching 83 C but, that is for many GPU and is nothing to worry about. Along with power constraints when reaching 83C, the performance of your card will decrease only after reaching 83 C depends where is the limit set. For my card is...
You do know Gen 13 and 14 Intel CPU are affected by 2 major issue ? voltages all over the place for the CPU-microcode and the second one, impurities in the manufacturing process.
Both issues affect system stability including the mentioned stuttering.
However let's try this first : open CMD as...
Looks... not very good. +12V is in tolerance but, might go lower under load and give you a black screen, restart the PC or pull you out of a demanding app.
+3.3V is not anymore in any tolerance so the +5V.
How old is your HX Corsair? it should really have no issue powering up your system.
Is...