https://bugzilla.kernel.org/show_bug.cgi?id=202043
--- Comment #7 from mistarzy@gmail.com --- Best results performance wise had with following setup:
echo 275000000 >> /sys/class/drm/card0/device/hwmon/hwmon0/power1_cap echo "m 3 1100 1000" > /sys/class/drm/card0/device/pp_od_clk_voltage
GPU clock hovered above 1400Mhz and memory kept state 3 with 1100Mhz even though I did not change to manual or sent commit. But after extensive use by benchmarking or gaming for 20+ min drivers seems to bug at goes to lower states even though temperatures stay the same. Let me know if you would like some tests and logs.