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You can use ShadowPlay if u have an NVIDIA graphics card. Works fine for me, no lag whatsoever. Can't recommend it enough.

Ok cool, thx

What do you use for recording? In OBS you can filter it out during recording. I recommend to google how to elimitate it. Alot of people have said they use Audacity to remove mic buzzing but I tried it once and it was plenty of hassle for me, so I just started recording with OBS.

I have a crappy webcam atm. Will plug in my mic today. I will check out obs :)