If I remember correctly, I think 0 is the hotkey to activate VR mode. Could be that it's trying to switch to a headset or at least trying to start the renderer in that mode and can't continue. I'd check in the keybinds to see if that's still the case (I'm at work so I can't check myself) and unmap it if you don't have VR. Alternatively, make a shortcut to the game and add a -nohmd
argument to the shortcut target to always start the game with VR disabled.
As for the trailing visual effects, that might be the result of a “sweetening” feature on your graphics card; something like NVIDIA frame generation or DLSS trying to create extra frames or smoothing the ones being rendered. I’ve had weird “ghost” effects in some games from NVIDIA’s FG tech, especially if I leave my view lingering on something too long and the AI thing “learns” that it should keep generating something in that space. You could try disabling some of those features to see if the issue goes away. Apart from that, try reinstalling video drivers.