Plz help me remove this stupid green crosshair.

I have no idea how to remove this fixed crosshair. I've been told on discord that apparently it's a FiveM crosshair but they didn't know how to remove it either. It only shows up when I go into servers from 500 person servers to 10 person servers. I have uninstalled FiveM and reinstalled restarted pc and deleted any files I think could be affecting it but it's still there. If you have any idea how to get rid of it plz comment or DM me.