Game is good, but needs graphics optimization for low end devices. I recommend to remove the shadow when set to low/lowest, lower the skill effects/particles, remove the grasses and lower the texture of leaf when set to low/lowest. And maybe the render for how far can objects spawn around you.
Additional About the shadow, it's already set to low but the shadow is still pretty high, ngl you just lowered it's resolution a bit. I suggest that wipe the entire shadow movements/physics from any objects, mobs, environment, characters. Or just replace it with a circular shadow below the object or mobs. It's the most common way to reduce lags for low end devices. I'm really looking forward to this game.