I'd appreciate if you could give details about the problem. You can read the CONTRIBUTING file to learn what you can provide. Others could be having the same problem and it'd be good to fix! - That aside, you can hide the UI and FPS by pressing F10. Works while on fullscreen as well (F11).
What's your OS and GPU? And what exactly happens when you try to launch the program? For now, I suggest updating your graphics driver (rebooting afterwards) and making sure it's not your antivirus stopping the program from launching
