[2023] Any Ideas on How to Make My Titanic WorldBox World Run Better on My iOS Device?

Since the new update came out, I've been playing WorldBox on a titanic map I custom made. It's been pretty fun, but now when I try to load the game, I'm only able to play for maybe 30 seconds to a minute before it crashes, and I'm ejected from the game. Although this sucks, it's not really that surprising considering that it's a titanic map on mobile with a population of 1,000+. I'm just want to know if there are any ways to alleviate some of the stress put on the game in order to make it run longer. I've already turned off shadows, vignette, and music, which had contributed to greater lag and more frequent crashing in the past. I'm asking if you guys have some other, similar methods (other than killing off a few hundred units). Thanks!