CPU power draw changes when BT window is on focus

[ElGuillermo]

Hey !

I've noticed something quite strange.

As the CPU is crunching either :
- 1 (multithreaded) Primegrid llrPSP WU
- 8 (single threaded) Numberfields CPU WUs
...the CPU power consumption increases when I have the BoincTasks window on focus.
it jumps from 95W to 130W, and returns back to 95W the second I give the focus on another window.

The iGPU isn't used at all and there is no non-Boinc heavy task running in background.
Windows Task manager confirms BoincTasks uses a negligible CPU time.

It seems I only can observe this behaviour when I set a <ncpus> limit in cc_config.xml :
I usually downsize the threads numbers to half their real number to prevent hyperthreading.
ie : AMD 9800X3D (8 cores/16 threads) -> <ncpus>8</ncpus>

Using :
- Windows 11
- BoincTasks (exe) 2.0.0
- MSI Afterburner 4.6.6.16757 / RivaTunerStatsServer 7.3.7.28314 (to monitor temps and power draws).
- Boinc client 8.0.4

Can someone reproduce this ?