Ninjadoodle
I had this problem also with the Ipad Pro the Game was unplayable with very heavy stutters and screen flickering also the Camera does very heavy movements, I didn't know at that time what could be causing those problems I thought it could be the device that it's faulty as it only happens on the Ipad Pro and I didn't want to waste too much time on it and I left it aside to check it on the future but now that you posted it looks like it must be a device problem, also I didn't know that this device runs at 120hz funny and I didn't know we have that feature to set the iPad Pro's limit to 60fps that's really cool thanks for the info.
I tested today again and the same thing still with heavy shutters and all those problems but setting the iPad Pro's limit to 60fps fixed all those problems and runs smooth as it should, so yeah that must be the problem.
==================
Ashley
You may need to alter your events to correctly take this in to account though, in case you accidentally designed your game to work at 60 FPS.
How would we need to alter our events, as far as I know, I just use dt on some events but I never locked it to run at 60fp I thought using dt it will take care of that and it will run at the device refresh rate