Im using an Akasa Newton X chassis which seems to perform better than the default fanbased cooling of D54250WYK.
I previously tried:
Turbo Boost Short Power Max: 30W
Turbo Boost Power Max: 30W
Processor Current Limit: 40A
and as you say it gets hot after a while.
Im now running with:
Turbo Boost Short Power Max: 25W
Turbo Boost Power Max: 25W
Processor Current Limit: 34A
which seems to fixed the stuttering problem I got previously when lighting effects were applied by the game (like when shooting).
To keep things cooler I also apply:
r_dynamic 0 (dunno if this have any effect)
fps_max 60