I've been having an issue since Quark Beta where if you walk into a certain chunk the game would freeze it's TPS and stop loading chunks, leaving the game frozen and even unable to close without task manager. This has made the game unplayable with Quark, and removing Quark makes the issue disappear.
I've tried:
-Removing OptiFine
-Starting from a fresh Quark config
-Dedicating more RAM
-Disabling specific worldgen features
-Disabling ALL worldgen features
-Downgrading AutoRegLib
-Downgrading Quark
-Downgrading Forge
-Upgrading Forge

My latest.log is here: https://pastebin.com/uEwxxMX2

My seed is 62089405
The game crashes around -655 64 -280
Latest.log with Worldgen Watchdog on
latest.log
(couldn't upload to pastebin as it's too big)