Board Thread:Roblox help and discussion/@comment-36035664-20180712173212/@comment-26397550-20180712180731

There's a difference between being able to run the program and being able to run the program at higher levels of power. Just because your computer is able to run Roblox, does not mean it can run it well. It is likely that the hardware, or components inside the actual computer, are not capable of rendering and processing Roblox well enough to be over 20 FPS.