Lenovo T14 Gen2 AMD - CRAZY High Latency - Am I screwed?

ooook. 

* Repasted CPU cooler.
* Took SSD out and wiped separately
* Reinstalled linuxcnc debian trixie package and did a couple tweaks from the links you posted.  All didnt work for me

Now im down to 21.2 microseconds in histogram with nobase.  10 glxgears and 4 x 4k youtube videos running.

 

Very good, looks like a win.

I believe in the BIOS you can set some options about performance mode in the power section. Further more with ThinkPads have you tried to install tlp and disable some power saving options there? I can imagine that this can help too. But maybe it does not work with the optimizations you have done from before.