Hello, I am trying to troubleshoot an item sorting system that is not working as intended with a 1.13.2 PaperMC SMP server. I have used world edit to create a schematic of the build that I then tested in a vanilla single player 1.13.2 server. On vanilla testing, the sorter works 100% of the time.
Items are carried via water streams across hoppers that use the generic ImpulseSV style item sorting circuit. The problem occurs when not all of the items get picked up by the correct hopper. On the vanilla server, the items are all picked up by the hopper.
From an input chest, the items travel through hoppers to a dropper that shoot them up a water elevator, where they are moved across the item sorting hoppers. At first, I adjusted item drop radius to 0 because I realized the items were merging after being shot out of the dropper into the water elevator. Then I noticed that if I moved to another part of the sorting system, the item entities would be deloaded (which did not happen in Vanilla testing). So, I adjusted entity-activitation-range to 32, which made the items load similarly to Vanilla.
After making these changes, the hoppers are now picking up a majority of the items. However, a few of the items still seem to move too quickly past the hoppers before they can be picked up. I was wondering what differences there still exist between Paper and Vanilla that could cause this behavior. I noticed there are several hopper related config settings (i.e. Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1), but I’m not sure if these would change anything. I do not want to break other redstone contraptions on the server.
Additionally, I have watched the count of items in the hoppers as the items get passed by, and the hoppers themselves are never full. I have attempted to increase the space between water streams using trap doors and ice, but it did not work, and there is not enough specifically around corners to slow the items down enough. The TPS of the server never drops below 20 during testing. Thanks for any help you can give.
Server plugins (I have changed very little of the configs of these):