Low fps when testing game

so basically, i just finished building a game, and after packaging the game when i tested it on an android device: samsung a51, im getting very low fps, very unplayable, ive tried literally every optimization technique, reducing poly count, like each object is like 5k vertices and like 4.5k triangles, what else can i do to boost fps, ive literally tries everything in the unreal documentation for android optimization. Open to ideas and opinions.

have you tried turning Mobile HDR off?

Mobile HDR on android really drains performance.

YES, I unchecked it in project settings, ive put it off

Hello!

Usually texture size maps are the most consuming GPU and that includes Light Maps.
Remember to always use square images and in power of 2, to optimize how the textures are read by the GPU.

Also Dynamic Lights are GPU very expensive, every light should be Static or Stationary. Baking light its not expensive in itself, in fact it is much lighter, but the size of the Light map image can be.

I really don’t know how powerful that phone it is, but I strongly recommend lowering the resolution of the textures. Possibly 512x512 for texture should be a good size. Even lower will be a lot better.

I hope it helps you!