@lnxd I gaved it a try, started with your suggestion of -50, well the gpu was not responding anymore.
Funny fact, it crashes the web gui and makes it not responding anymore.
Why is it so that unraid gets offended when a gpu crashes?
Only after a restart its possible to use the gpu and the web gui again.
Thx for the suggestionwith -powlim, found a good setting for the graphics card. Thx for the support and development.