WackyToaster
Lord have mercy 17k events, 25k actions, 4k object types! That's like orders of magnitude larger than my largest project, which is like 500 events tops. No wonder I have no issues lol. Out of curiosity, what are you building?
1stepcloser.itch.io/tbd
dop2000
Our project is much smaller: about 50MB in size, 10K events, 500 object types.
And it's a beauty, I saw a few videos of it, congrats to you and your team. ( ^.^ )
WackyToaster
I've been mucking around in the project a while, but apart from switching to the eventsheet I don't have any freezes longer than a few seconds, and even those are only on the eventsheet. So... I dunno.
Main Factors in my experience:
1. # of objects, global variables -> Slower dropdown lists
2. Duration project is open -> Garbage collection issues leads to slow down -> This affects practically all actions for me, unlike the dropdown list specific issue.