I know OBS is pretty common, and I've been using it for a couple weeks since I got my new PC, but ever since, I've also tried out NVIDIA's built-in screen recorder and, to be honest, I had a better experience with the latter more. I've been using it to record my runs now and the recording always came out perfect. Plus, it has an indicator icon on the corner of the screen (which doesn't appear in the final video footage, so that's a +1) that lets you know if it's still recording or not, so that gets rid of the paranoia. Also, it's easier to use since it requires less setup before recording and has settings that aren't that advanced (no need to be as it mostly just reads the advanced stuff from the PC specs anyway, though I understand why OBS would require more setup).
Yeah, I do wish OBS had a better indication of whether it is recording or not. I have two screens so sometimes keep it open in the other one, but seeing my own screen twice can be off-putting. But I don't know OBS very well, maybe there is a setting.
Good to hear NVIDIA is working out well for you.