Cascading WorldGen Lag

[Pitj3]

Getting:
customoregen loaded a new chunk [-11, 41] in dimension 0 (overworld) while populating chunk [-10, 43], causing cascading worldgen lag.

in MC 1.12.2

Should be easily fixable through:
http://www.minecraftforge.net/forum/topic/60721-1121-how-would-i-prevent-cascading-worldgen-lag-during-worldgen/

[lawremi]

COG defers population in order to overwrite "back population" when ordinary world generation crosses into previously populated chunks. It's possible that this check is a false positive triggered by the deferred behavior. That thread is not relevant to COG, which is far more complex than any other ore generator.

Are you actually experiencing lag?