I currently run with:
Turbo Boost Short Power Max: 25W
Turbo Boost Power Max: 25W
Processor Current Limit: 34A
(
compared to default who are:
Turbo Boost Short Power Max: 25W
Turbo Boost Power Max: 15W
Processor Current Limit: 32A
)
and that seems to have resolved the stuttering when firing.
Now my only problem left is that fullscreen seems to hang after a few seconds while running in windowed mode works without hangs.