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On a 3250C:

timestamp: dev: 20897 ticks cpu: 1766980500908 ns clock_crystal_freq: 25000
timestamp: dev: 40542 ticks cpu: 1767183203268 ns clock_crystal_freq: 25000

So in 203 ms, we only advance 19645 ticks on the GPU. (first timestamp is always lower than the second, but the values differ a lot)

with

echo profile_standard > /sys/clas/drm/card0/device/power_dpm_force_performance_level

it works correctly.

Tested on Linux 5.4, 5.10 and Picasso seems to just work.