When testing my game on low performance android devices the layouts start with low fps and that lasts about 5-20 seconds depending on device memory load.But this only happens when I start the layout from the level select menu or after an ad shown.If I directly go from one level to next one without an ad impression the next level starts smoothly.I dont preload ads,I only load them at the end of a level sometimes.
I tried many performance tricks even I tested it by deleting %90 of assets on specific scene(totally removed all plugins too)but if I start this scene with that few object from the level select menu it still starts with low fps.
Do you know any specific thing that could be causing low fps when switching from main menu to a layout or after showing an ad?