What sort of problems? Most games use DirectX I think, most game recording software are designed to record that. But not all games, I had one game (Small World 2) where text on the screen was not recorded. I use Bandicam, which also has a screen capture option which can record anything on the screen (so just set that to full screen). That probably would have worked with Small Word 2 (although I didn't try it).

I don't know if your problem is related, but it might be. If so, do you have any other screen recording software you could try? If you have a modern Nvidia card, that comes with some Shadow recording thingy. Additionally you could download the demo of Bandicam to test if that works in either of the two recording modes. It's usable for recording up to 10 minutes I think (but it puts a watermark on it).

Nothing to lose by trying it (but something to lose if you decide to buy it). It comes highly recommended by me, and I should know, I'm highly opinionated!

The OBS is causing me all kinds of issues with trying to record this particular game for some reason

Looks interesting.