February - last edited February
Turns out I need to quit the Discord software. Instead I need to use the web based app in my browser. Now I have my FPS uncapped again with +fps_max unlimited in the launch options of Apex. And settings on high again.
So I'm unable to use the normal Discord app from my harddrive when playing Apex Legends with high FPS, and need to use the web based one from my browser instead. But if I cap my FPS to 80, with +fps_max 80, I can use the Discord app from my harddrive as usual.
But it's not the in-game overlay, already switched that off. Even with in-game overlay switched off it will crash. Need to use web based app in browser.
For now I'm using the web app in my browser so that I can play with high (uncapped) FPS.
Hope there will be a fix soon.
Intel Core i5-9600K - OC all 6 cores to 4.8Ghz
Asus ROG STRIX GTX1080 8G
Samsung 970 Evo 500GB M.2 SSD
G.Skill Aegis F4 3000 16GB - OC to 3200
To everyone, this helped for me.