This is a really fun game!! I love the concept!
Also - I think maybe some movement calculation of yours is missing deltaTime, since the bats are much closer to me on one PC than another.
Ahh darnit, yeah that makes sense, I was calculating their positions based on past frames, which was not a really smart idea lol, I don't have a high refresh rate display to see this issue sadly. 😅
Thank you so much!