(2014-02-17, 15:44)noone Wrote: I've experienced the same issues as well on every Gotham nightly I have used on the latest Mavericks 10.9.1. It appears that the Vertical Blank Sync option doesn't fully work.
The only reason I'm using nightlies is because the HDMI sound broke in Frodo after I updated to Mavericks. (the mini loses HDMI sync which causes video stuttering until you toggle a sound option in the XBMC settings.)
Honestly, I wish I had never updated to Mavericks.
Any solutions? Ironically, in the interim, I'm now using a $35 Raspberry Pi which runs XBMC perfectly!
Well, not just 30 minutes ago, I finished the drastic measure of downgrading back to 10.6.8 and on first appearences it looks ok, although I though it was resolved once before. Due to this I need to do more testing with different media, but even the refresh rates looks better for some reason... I'll keep you posted and my fingers crossed.
Some other addition observations:
Soon after the issue started, I begun connecting with VNC on 10.9.1. I found out not long ago, while connected with XBMC running, the tearing stopped, but the mouse inputs where insanely laggy. On 10.6.8, the inputs are much smoother.
I did some other research and it appears 10.9 has upgraded OpenGL (to 4.1) and OpenCL (1.2). I'm unsure if this has made any differences, but I also looked down the route of the Nvidia Drivers, which I've found lots of complaints about in 10.9. Interestingly my MacBook Pro on Sandy Bridge works without issues when outputting to the same TV, this isn't Nvidia.
Other information on the forum also suggests that 10.6.8 is the lightest and reference for XBMC, so this is another reason why I took the route to downgrade back to 10.6.8. I think the Mini will be more happy!
Edit: I don't think the Vertical Block Sync isn't working. It appears differently in my eyes, so I think its something else coursing it.
Edit: After more testing, I can confirm, the downgrade to 10.6.8 doesn't have this issue!