[jwong_]

I wonder if there's an issue with my firewall (little snitch). I'll try disabling that and see if that helps any.

[quesera]

Sounds plausible. You definitely need UDP ports 6000-6010 (?) open incoming to the Mac.

[jwong_]

I ended up deleting a few extra rules I found in little snitch, and things seem to be working much better. I guess maybe there was some contention in the multiple rules.