Yea it does unfortunately lag no matter if you have a strong computer. PTTR just don't seem to like too highly-detailed levels, and having too many enemies fighting at once in these levels too lowers the performance even more.

But other than that, really decent level. i'm glad to see that some of those prefabs of mine could come in handy.

And speaking of Prefabs. The cash register that you used was made by AUserObviously, just so you can add him onto the primitives credits.