I'm having the same issue. I used to record games with ReLive in the previous version of the Radeon Software, today I upgraded to version 20.1.1 and I can't find the option to record games, there is no streaming tab, and there is no recording settings in the General Settings tab. I disabled Hyper-V according to what I read online, but still there is no recording options.
Motherboard Asus Prime B450M-A/CSM
Corsair Vengeanse LPX 2x8GB