Got the exact same issue. No idea what's going on, even fortnite on lowest settings i have problems.

So I run a pretty beastly PC. Specs are as following GTX 1080TI - AMD RYZEN 7 2700X 32GB 3200MHZ DDR 4 ram 512 Evo 980 SSD WIN 10 64X -------------- When I'm in a game and play normally it's smooth as butter, not a finger 100+ but as soon as I press start recording my game still runs fine, but it's ...