• Hello [name]! Thanks for joining the GMC. Before making any posts in the Tech Support forum, can we suggest you read the forum rules? These are simple guidelines that we ask you to follow so that you can get the best help possible for your issue.

iOS Xcode simulators running slow?



My game runs beautifully on my iPhone 6s, at around 60 fps.

But whenever I run the game on an Xcode simulator, the game runs super slow - about half speed or less. Is this normal, or should they be able to run the game smoothly? My game does do quite a bit of surface drawing/clearing, changing blend modes, and using a simple shader. But like I said, runs fine on real devices.

Using Xcode 9.3.


Friendly Tyrant
Forum Staff
This is normal. Simulators and emulators are usually fairly slow given that they are running a whole OS on top of the base OS while trying to simulate hardware etc...