Game Refresh Rate Not Correct on Linux Mint

Here’s a doozy:

Whenever I play the latest version on Linux Mint 20.3, I always see that the game is not rendering at 165 FPS, when I have it set as such. I make sure that Vsync is off just to make sure. For some reason, I get tearing, and what looks like 60 FPS. That’s weird. This also happened while using Nobara Project.

I thought I’d make a clarification, just in case I confused someone: The renderer I was using was OpenGL (GLAD didn’t seem to work). Apologies for not clarifying.