My grandson uses both of my PC's, when available, and he is quite hooked on it. Unfortunately, I don't think Roblox likes my computers. One is an old Sony Xp, but good spec, and the other one is an HP i5Intel PC. when running Roblox on the XP, it seems to put the graphics card into a different mode, and also slows the PC down, leaving me to correct the display and clean up after my grandson has stopped using the XP. On the newer PC, the HP, the game seems to run better, but it still produces one or two problems that I could do without! I have uninstalled it from both PC's now, but if anyone has similar problems ( or solutions), please let me know.