So im still very new to UE4 but what made a great difference in my game is using streamed textures. I’m not sure how it would work in a mobile game but its worth a shot. Try going into some of your expensive (like 4k or 8k textures) texture files in UE4 and changing the ‘Power of two Mode’ to ‘Pad to power of 2’. This will make them basically nothing when not in view.
Alternatively if you have a lot of 4k/8k textures you can change the max texture size it loads in so it uses a lot less video memory. This is still in the texture file itself. Type ‘max’ in the texture search bar and you will see a ‘max texture size’ that you can set. Once applied you will see the stats at the top of how much video memory its going to use. Hopefully that helps. I think i remember something along the lines of dont try to stream textures that are user interface as they’ll come out messed up so dont bother changing those to pad to power of 2.
