iGPU clock decrease when lower CPU's TDP

[ducanh-le]

Hello,
I have a R7 5700U (1.8-4.3Ghz) with Vega 8 1.9Ghz.
Today I found that my iGPU can only boost to 900Mhz when I tried to lower my CPU's TDP in order to limit the temperature. Is there anyway to lower the CPU's TDP but still keep the iGPU running at its default maximum clock (1.9Ghz)?

[JamesCJ60]

The TDP set in AATU is a power limit for the APU as a whole so CPU, iGPU, SoC, etc. You can set a static iGPU clock AATU, but then you will still be restricted by the TDP you set as the APU will power throttle the rest of itself if the iGPU requires more power.