Is there any way to make BTD6 run better at later levels?

I really enjoy building insane builds and going on as far as I can. But, the game seems to run horrendously at the later levels, to the point where it slows down so much that waves can take like half an hour to finish.

I have a gaming computer, so I don't think it is a problem with my computer being unable to run the game. Is there a way to make the game run smoother? I really want to do more late-game runs, but the game slowing to a crawl as it tries to render projectiles and such makes it quite an annoying task.

Unfortunately, one of the best solutions is selling towers that shoot a lot of projectiles that don't have much power and focusing on a main tower, like a temple.
I think that one of the main causes of the latency is the projectile-blimp collision: if there's both a lot of projectiles and a lot of blimps on screen (like in late game) the game might have to calculate too many collisions, eventually slowing the game down.
Also, if you have any Alchemist with Acid Pools, move the Alchemist away from the track. For some reason, this upgrade causes a lot of latency.