Hello there, and thanks for playing my game!
I basically ran out of time to properly do a polish & performance pass on this level, so yeah, I agree, I'll be adding them on a future update. I used Unreal Engine 5 here, and yeah, it is quite expensive to run.
I like open ended level design as well, something I prefer to incorporate more in my level designs. When I saw the theme was "parkour", I immediately thought of Mirror's Edge: Catalyst, and designed a miniature version of it... more or less :)
Speaking of updates, by the way, that screenshot you posted is at a spot where the game actually broke - I accidentally left it too high, and noticed it this morning... Sorry for the inconvenience, really. I'm uploading a patch for this as I write these lines, expect it in about half an hour or so (I got slow connection at the moment...) I'm not changing anything else, just fixing a bug that made the game unplayable.
Thanks for playing!