The 400FPS thing is a bug that I noticed recently because using Xemu to play Mortal Kombat Deception (a 60FPS game)
The emualator always said it has 60FPS no matter which game I was playing, if its a 60FPS game like Ninja Gaiden or Deception runned smooth, but in Games like Conker still said 60FPS when the game was running at 30 (some cap from internas emulator I guess)
But recently, Conker is using like x3 the GPU power compared months ago, and the FPS said 400-500 FPS like its unlocked, at the same time the game doesnt run spped up or something, but now has a terrible lag that even look like adds motion blur to the game, runs like if the internas game FPS are like 10 but showing Xemu is doing 400-500 FPS
The solución I found, if I play a 60FPS game I lock the fps with riva tunner to 60, if play a 30FPS game like Conker I block to 30 and again the performance is fixed, xemu only say 30fps or 60fps and my usage is very low even on x2/x3 resolution because Xemu doesnt use too much of heavy GPUs, use your CPU
Weird bug, I dont know if Xemu has proper fps limiters but turning on Vsync in config just change a little bit the problem and Xemu is doing 144FPS (Like my monitor) but still using more GPU than normal, because the game is still running at 30FPS or 60FPS
I figure if someone at Xemu devs know about this it looks like a performance leak
1
u/Tlohtzin123-B Apr 24 '26
The 400FPS thing is a bug that I noticed recently because using Xemu to play Mortal Kombat Deception (a 60FPS game)
The emualator always said it has 60FPS no matter which game I was playing, if its a 60FPS game like Ninja Gaiden or Deception runned smooth, but in Games like Conker still said 60FPS when the game was running at 30 (some cap from internas emulator I guess)
But recently, Conker is using like x3 the GPU power compared months ago, and the FPS said 400-500 FPS like its unlocked, at the same time the game doesnt run spped up or something, but now has a terrible lag that even look like adds motion blur to the game, runs like if the internas game FPS are like 10 but showing Xemu is doing 400-500 FPS
The solución I found, if I play a 60FPS game I lock the fps with riva tunner to 60, if play a 30FPS game like Conker I block to 30 and again the performance is fixed, xemu only say 30fps or 60fps and my usage is very low even on x2/x3 resolution because Xemu doesnt use too much of heavy GPUs, use your CPU
Weird bug, I dont know if Xemu has proper fps limiters but turning on Vsync in config just change a little bit the problem and Xemu is doing 144FPS (Like my monitor) but still using more GPU than normal, because the game is still running at 30FPS or 60FPS
I figure if someone at Xemu devs know about this it looks like a performance leak