it probably have lag anyway cool detail about crate Death +tax +flashbanks

to hard and way to much lag

Way too much stuff and I mean, you note on this as well in the collection description so I'm confused: why you would willfully create such levels that are quite likely to be pretty much unplayable or at least rendered much less enjoyable to play due to lag?

The added burn drugs objective, that requires going down with the elevator , could have been split into its own smaller follow-up level you would transition from here. The elevator would have been a perfect place to make that transition. If you did that and then generally reduced the number of rather redundant Vampire enemies as well as dancers, I think you could reduce lag drastically or eliminate it completely for majority of users.