My game runs smoothly in the web preview on my mobile devices, however, the APK is almost unusable on the S20 and S8. My game is only 40mb (compressed version) in size, still the ram usage cranks up and the app crashes on my s8 at some point. On the S20 it is extremely laggy and the phone gets really hot, even dims the screen.
Now, my game‘s viewport is 2160x3840, the Assets are all around 1000x1000 but on the other hand it is 2D, doesnt use that many sprites and runs very well in the preview. Also, loading times are horrible. I tried using low image quality and various types of compression to no success.
I might try making the viewport 1920x1080 in the future but I believe thats not the main issue here.