Cannot select different screen resolution

Does anyone know why I’m unable to select a different screen resolution? I’ve done this before with no problems when o had a different monitor but for some reason it’s not allowing me to select anything different to my native monitor resolution. My monitor is 3440x1440 but I have changed the resolution in the Nvidia settings to 1080p but the sim is still rendering at 1440p.

I would check the UserCfg.opt file where resolution and windowed/fullscreen parameters are actually specified/saved.

It shows 1440p in there. Previously I’ve just been able to change the in game resolution in the options.

If it shows 1440 in there, then that’s probably what you’ll get. If you want 1080, it needs to say that.