Rarely, but occasionally, even prior to Keyclone use (with two physical systems).

The toon following, in a few area's of the game, will suddenly find something to the side to be worthy of investigation and veer off.
I'm guessing the issue is poor pathing code, because even with minimal latency this consistently happens in the same spots.

Does your /follow break all over the place, or only now and then, and possibly in the same areas?