Re: Better control for adaptive performance mode
This issue has been notorious for many, many years.
There is no official way to do this, probably because it involves thermal design and therefore the card/laptop manufacturer.
People have had various success with tricks like the xorg magic or calling nvidia-settings -q all every 10 seconds or playing a silent sound file permanently in the background or things like that.
The only real way to do this is to flash a modded bios where the frequencies for each level are adapted. Of course such a procedure has it's own risks.
Lastly, trying to avoid GPU-hogging software can be an approach as well.