I downloaded KDE recently and it was working fine for few hours and then
I check and found few things :
1. - intel_powerclamp
I removed from module loading list and I can see some improvements.
2. I try to remove nouveau graphics and intent to use i915 Intel default
I am not able to remove.
3. Few times, I see following message :
perf interrupt took too long (3181 > 2500), lowering
kernel.perf_event_max_sample_rate to 50000
After see this message, computer slow down for few mins.
Please advise on how to solve above issues.