Modpack version
0.4.9

Describe the bug
When crossing claimed chunks in the west direction, there is a noticeable lag spike. It only happens the first time you cross in west direction, until you cross over another chunk going east. It only seems to be happening in claimed chunks and only when traveling west.

Screenshots
I can provide a video if needed.

I can no longer reproduce this in 0.5.0, gonna mark it as fixed :P

Thanks for the report, a video would be very helpful :)
@MaxNeedsSnacks Got any idea about what might be causing this?

Nope, there's no reason why it should happen (or at least why, if claimed chunks are responsible, it's restrained to this one specific case)

Retested again, its seems alittle more intermittent but still only happening when crossing chunks while going west.
Also it is happening in non-claimed chunks.
https://dl.dropboxusercontent.com/s/ox6h98nqltbexi2/zfpTfmMxKAgAaIRfbSFu.mp4

I can reproduce it in several directions sadly, it seems to be worldgen lag.