Instead of running bobby upgrade every new version, datafix chunks on demand (run through DFU), similar to how a server does.

It used to do that in early development versions of the mod, however that resulted in pretty bad lag spikes while playing (or annoyingly slow loading if artificially throttled).

It used to do that in early development versions of the mod, however that resulted in pretty bad lag spikes while playing (or annoyingly slow loading if artificially throttled).

are the chunks not loaded asynchronously? If so why wouldn't that datafixing also be ran off-main thread