With this update comes an extremely important fix for worldgen stuttering. As everyone has surely noticed, generating new chunks would cause a 2-5 second stutter where the world would freeze as the chunks loaded. We managed to find a simple way around this problem, however the cause itself is actually due to how vanilla/forge decide to send chunk updates.
Because TFC worldgen doesn't change very many blocks when decorating the world in comparison to vanilla (I know right!?), the networking engine chooses to use a different packet than just sending the entire chunk to the client. This seems to trigger a massive number of lighting updates and devolves into a giant mess of lag for a few seconds.
There is also a whole host of other fixes and tweaks, so I recommend that you head over to the changelog page to see what all has been affected.
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