At some point during execution, the plugin enters a very tight loop that repeats the following:
Creating item with less than 1 amount! (Medical Syringe)
[BetterNpc] Failed to create item! (syringe.medical)
When this happens, the server is rendered useless, and all activity ends because the plugin spams that message repeatedly and takes up all the processing resources. I don't see in the configs where this would be the case, but also, it should never do this regardless. Any assistance would be immensely appreciated as I'll otherwise be forced to stop using it. Thanks!
EDIT: I found a place in the config where in my own loot table, I had the min and max quantities of a syringe set to 0. This was the culprit. It was my fault, but the plugin let me do it and didn't report any issues or otherwise handle it. I *highly* recommend testing for 0 values and handling gracefully. The current effects of an accidental misconfiguration like this are apparently disastrous. Thanks!