Here is my problem: I play on PC with a lot of mods that make this game impossible to play at 60fps for me (and some of them are graphical mods). So I choose 30 fps no problem for me. I pick my resolution, 60Hz refrest rate (RR) and set the vsync to half, this way I get 30fps in the game and no tearing. Here's the problem though, in GTA V on PC if you have fullscreen mode + vsync, you have MAJOR INPUT LAG (IL). It pisses me off.

I know that I can get rid of most of the IL by choosing windowed borderless mode, but here's the thing. I can still pick vsync to "half" but I can't change my RR. The game simply takes my monitor's RR (which is 75Hz) from my general PC settings and instead of 30fps, I get half of 75, so about 37-38. Because of that i see fps fluctuation from 38 to low 30s sometimes and it annoys me (I have extremely sensitive eyes when it comes to fps fluctuation).

The only thing I can think of is to set my PC's RR to 60Hz but that would apply to everything then (but would make my problem in GTA V go away) or play the way I play now, fullscreen with huge input lag.

 

Any ideas?

What GPU are you running? NVIDIA control panel for example has settings that you can use to force RR. That or consider G-Sync?