You shouldn't have to set an FPS limit from an end-user or anything like that. I suggested Sleep(1) to see what it does temporarily, because that should drastically stall everything related to your program and the GPU not receiving work to do. There usually isn't any reason to render faster than 12…

Kenshoryu said:

@JoeJ I realize that moving many sprites by themselves is expensive for the CPU. I think that ideally I should first balance the number of elements on the screen before trying to optimize collision detection. I think if at the time we had few or no games that had many sprites on the …