[2021] My cpu hits 100% all of the sudden, when i start For Honor game.

Elcap0ne Greetings and welcome to the forums! Sorry to hear you are encountering this issue with For Honor all of a sudden. When seeing this, I would first check to see if you have any unwanted Background Applications running with For Honor. If you have already check this out, try following our PC Troubleshooting Guide to ensure everything is updated properly.

If these steps have already been exhausted before reaching out to us, could you please create a support ticket with your MSINFO & DxDiag attached? This way, we can take a closer look at what might be the cause.