I bought an old used Xbox over the summer holidays, and it was working fine the first day. However after that it started to not play discs, or play them, but the game was laggy. I bought a DVD Disc Drive cleaner and that seems to have worked a little. It’s still a bit laggy in some games though at certain points. What do you guys think? Should I clean the lens by opening the xbox up? Or just leave it as is, because it’s working? I look forward to your insites.