My gpu has been increasing usage but decreasing clock speeds while charging during gaming
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ThrottleStop makes it easy to see that the CPU thermal throttling (PROCHOT) temperature is indeed set to 92°C. This is much lower than the Intel recommended value of 100°C. I could never figure out why Acer does this but now that I think about it, because the Nvidia GPU has a low thermal throttling temperature, Acer likely set the CPU throttling temperature low so it does not overheat the GPU. That makes sense. Including a properly sized heatsink and fan for the CPU and the GPU would make more sense but a bigger heatsink costs money. I guess it is cheaper to low ball the thermal throttling temperatures.
The 9300H has a 45W TDP rating. In a properly engineered laptop, you should be able to run a 45W CPU at 45W indefinitely without it overheating. Look at the screenshot you posted. At only 27W, the CPU is already overheating. That indicates a problem with your laptop cooling. When was the last time you opened up your laptop for some routine maintenance? Most users do not give maintenance a second thought until there are problems like you are having.
I would open up your laptop and blow out the dust in the heatsinks if you have not done that in recent memory. If that does not solve your poor cooling problem then you will need to also replace the thermal paste. This procedure is usually not that difficult. Watch a few YouTube videos to see how it is done. Just blowing out the dust can solve some overheating problems so try doing that first before replacing the thermal paste.
There is usually a tab in GPU-Z that will specifically list the Nvidia GPU throttling temperature. It is not too important if you cannot find that info. The log file makes what is happening obvious.
DATE TIME MULTI C0% CKMOD BAT_mW TEMP NVIDIA GPU VID POWER 2022-07-07 15:47:20 21.00 44.3 100.0 0 89 300 91 0.7175 11.9 2022-07-07 15:47:21 21.00 85.4 100.0 0 89 300 91 0.7151 11.7 2022-07-07 15:47:22 23.73 89.4 100.0 0 90 300 91 0.7092 14.6 2022-07-07 15:47:23 21.00 46.4 100.0 0 89 300 91 0.7092 12.0 2022-07-07 15:47:24 21.00 55.0 100.0 0 89 300 91 0.7151 12.1 2022-07-07 15:47:25 25.11 56.7 100.0 0 89 300 91 0.7151 14.6 2022-07-07 15:47:26 21.00 44.3 100.0 0 89 300 91 0.7174 11.9 2022-07-07 15:47:27 24.25 88.8 100.0 0 92 300 90 0.8370 14.6 2022-07-07 15:47:28 27.37 88.7 100.0 0 90 300 90 0.7184 16.2 2022-07-07 15:47:29 21.00 56.5 100.0 0 89 300 90 0.7157 11.9
The GPU reaches a maximum temperature of 91°C and just sits there at that temperature. That is thermal throttling in progress. The GPU slows down to only 300 MHz but it is still running at 91°C. It cannot increase its speed because it is already running too hot. At times your 45W CPU is only at 12W yet it is running at half of its rated speed. It too is bouncing off the thermal throttling limit. Your laptop needs much better cooling so both the CPU and GPU can run at their full rated speed.
If you are going to replace the thermal paste, find something that works well in laptops. Ignore any Google reviews where they are testing desktop CPUs. A mobile CPU does not use an integrated heat spreader like desktop CPUs use. A paste that works well on a desktop CPU might work poorly or only last a week or two on a mobile CPU before temperatures start going up and up again.
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