Strong Lags after one Game

Hey, in advance, my English is not the best because i am from Germany, but i will try my best to describe the Problem.

I bought FC 26 and i was able to play without any Performance Issues for around 2 hours.

But after the 2 hours, the Game started lagging so strong, that it was unplayable. I restarted the Game, but the Performance Issues were still there. After some hours i was able to play a Match before the Lags came back. Same for Today.

The Lags started Mid-Game in a Solo Match. There were some little Performance Issues when i did not have the Ball, but when the Ball does anything but being just rolled forward by AI, it starts lagging, so that i have like 10 FPS. In the Menu it runs completly fine without any Performance Issues. 

I dont think it has something to do with my PC Parts, because F1 25 and other Games run completly fine.

Can anyone help me fix it or isnt there a Way to fix this?

in Case it has something to do with my Parts here are they: 

CPU - Intel(R) Core(TM) i5-9400F CPU @ 2.90 GHz
RAM - 16GB
GPU - NVIDIA GeForce GTX 1660

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CPU - 100% in Match, 60% in Menu
RAM - 70%
GPU - 40% at 63°C