NVIDIA PRIME reverts to integrated GPU after a while

Like the title says, I use NVIDIA PRIME to run games on my dedicated graphics card, and at first it works perfectly, but after a while I hear the fans spinning down, the performance drops substantially, and if I open NVIDIA X Server Settings, the “GPU utilization” has dropped to “0%”. I am guessing that it has changed back to the integrated graphics. The only way to fix the issue is to close the game and relaunch it, in which case it works as expected again, until the same thing happens.

Any help would be greatly appreciated.

Hello and welcome!

Just a hint: I would guess it is the power managment.

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