I definitely think it was a little speed related. when i use it as a ferm keg and serving keg for the same batch it works perfectly, draining it completely, but if course only pulling one to a few beers a time when doing that. I've never had an issue clogging then. It was only the one dry hop needing a little more compaction. Other dry hops worked okay too.
Actually know that i think about it, i had one other issue with fruit, apricots in a number 9 clone, that also left a lot of beer behind. that time i was in a rush and didnt crash it again, nor did i really care about capturing every last drop.
I dont have it in one of my active kegs at the moment, but perhaps i will stop using it as a ferm keg and start using it as a dry hop/ serving keg only, where i wont have to transfer off. It might be biased, but I dont think I get the same aroma pulling with a CBDS above the hops as I do pulling through the hop bed