[MOBILE] Realtime lighting problem

Hello all.

I'm having some difficulties trying to optimize my android due to the lighting, but I can't seem find a solution for this.

My game is a horror game which makes the scenes very dark. The player has a flashlight and he can also turn on/off light switches, that means I just can't bake lights and have to use realtime. I already change the light mode to "not important", reduced the range of the light and camera view, reduced the pixel count in the settings and I'm also using mobile shaders. But it still increases batches way to much.

Is there any work around for this? I thought about having a 2D image in the canvas blocking everything except a circle in the middle, but it doesn't look very good.

Thanks