Sounds like the extruder is starting to block, so has nothing to do with host it self. When this only happens with multiple small items it is either a problem that you have a retract issue, e.g. retracts works but undo looses some steps causing the first x mm to have less material and when you start catching up next retract comes. It can also be a cooling problem. When heat creeps up you need more force which you might not have. With big object you have more extrusion per time so more cooling from new material. In this case you need to reduce printing temperature. Many printers have for this a heat break and a cooler for the upper part. But when hot filament walks up past that it gets hard and can start blocking.
So sounds a bit like one of these problems. So try without or with lower retraction and a bit lower temperature (5°C maybe) and see if it still happens. If it works you can start finding out which of these is causing the problem.
