Massive fps problems with very strong pc

My friends and me have been playing quite some aom retold already.
Unfortunately one of my friends has MASSIVE fps problems, his frames per second drop further and further after a match starts.

His hardware is
Alienware Aurora R10 (Pc name)
CPU is a AMD Ryzen 3700X
GPU is a AMD RX 5700XT
16GB (2*8) ram, 2936MHz , dualchannel in slot 1 and 3
Mainboard 0NWN7M, X570 Chipset

His cpu and gpu temperatures are in an absolutely normal range.

When the game starts, he has 100+ fps, when it goes on, it goes down to ~10 fps.
The multiplayer against other players is pretty much unplayable like that.

My hardware is a LOT weaker and my pc handles the game way better.
So it is not his hardware I guess.

I hope someone can help us.

Your friend’s laptop is overheating. I suggest capping FPS to a reasonable amount, like 60. RTS don’t need a lot of fps.

Thanks for the answer!
It’s not a laptop, but a pc.

As mentioned, the temperature of cpu and gpu and perfectly ok, far away from heat-throttling range.

He did cap the fps already.