Thanks for being so understanding and helpful. The engine is Unity and I used Blender to model everything. I've already optimized everything as much as possible ( all music gear is sharing a single 4k texture atlas and 8 materials and everything has simple box colliders), so I think that I just need to raise minimum specs to S7 or better and release it. Thanks again for checking it out and letting me know about the issues. I wish I had a better solution.