Simply Improved Terrain is causing severe generation lag in my pack

[Roadhog360]

Apologies for the uninformal initial post. I will update this post later, after doing some proper research, but I wanted to put this here now to make you aware that there is some sort of conflict, I will do more research into it at a later time. In the meantime, here's a spark profiler report.

In my pack, I've narrowed down that the act of simply removing Simply Improved Terrain fixes pretty much any worldgen lag, for some reason when it's installed, the server just cannot keep up, even slow movements quickly overwhelm the server and drag the TPS to its knees.

Please let me know if you'd like me to send you my modpack's files. I will investigate the issue myself sooner or later, as I love SIT's improvements. If you add me on Discord I'll also send the files there if that'd be a preferable place to send files; I have the same username everywhere.