it's not necessarily the brand of bb's, but the majority of times i've seen this issue, better bb's have fixed the problem. particularly when it's binding in the magazine is the root cause.
that said, it's typically an issue you'd see more often in midcaps with a double stack single-feed, as opposed to hicaps which are single stack single feed (and as such don't bind so much)
there are other candidates, weak magazine or a pew running too fast without a delayer chip (typically manifests on auto but not semi). a longer nozzle can do it but usually that blocks everything.