Specifically I had the feeling that the character somehow doesn't quite move where I'm pointing, maybe it is just a long response time. I noticed this particularly when close to the edge of the arena. I think perhaps it's some combination of lag and the fact that the character just constantly moves of it's own accord, although the game did not look laggy when I played it, maybe it had input delay rather than dropping frames.
So I opened the game again just now to refresh my memory and look closely, and I think this feeling is a combination of three things:
1) The character moves constantly toward the cursor without some sort of button input--low tactile connection makes if feel as though I'm not in control.
2) The screen zooms out as I place smite anchors--variable zoom is often disorienting in isometric ARPGs.
3) A little lag--honestly performance is pretty decent on my rig, but if someone is getting a lot of delay it will definitely seem like the character has a mind of it's own due to point 1) above.