I was told that this might be due to Lithium causing stalls on chunk load and making watchdog crash

in case this person is correct, here is the crash log

https://gist.github.com/itsdinkd/ffbabd815c9d954616ea96ff87571da8

There is not reason to believe this is caused by lithium in the crash log. Lithium modifies getChunk and appears in the stacktrace, but the modifications are minor and not able to cause a deadlock.