My game runs normally at 55-60 fps. But on old devices, when there are too many enemies, the frame rate drops down to 40-45 fps. In those cases, I notice that all spine animations are played slower than normal. I'm not sure if it is how it works, or that is a problem caused by me, because in a different project run by my coworker, the game runs at lower frame rate, usually around 35-40 fps, but the animation speed is just the same as it is in spine editor. Both my project and their one got Application.targetFrameRate set to 60.