Running a 7 gig dedicated server and the console keeps spouting out this message:

[FML]: Rats loaded a new chunk [215, -19] in dimension -8 (Ratlantis) while populating chunk [216, -18], causing cascading worldgen lag.

No idea how to fix it

all issues regarding ratlantis are being closed as the dimension has been completely rewritten from the ground up and shouldnt have these issues anymore in 1.19 and beyond