Interesting. Can you try an older version (you probably still have the zip file?) again to see if that makes a difference?
I don't think I have changed anything about the video streaming in quite a while so I'm very curious to find out if this is caused by something I did.
You could end up with "CPU not fast enough" errors if for some reason your network buffered up a whole lot of video and then delivered it all at once. Certainly I could see some VPN implementations being the cause of that, but I wouldn't expect it to happen often.
Well, here is an interesting tidbit of information. I did as you suggested and actually restored UI3 beta1 from early November from a backup. Same results, slow over the VPN. Then I restored BI version 4.6.4.8 from that same time frame (November 9th or so) and it worked great. Restored UI3 back to beta 17 and it still worked great. So, it has something to do with BI, not UI3.
I have all of the update files for BI, and I just tested each one of them, and it's BI v4.6.5.0 that introduces the long buffering delay. Any version prior to that and UI3 comes up almost instantly over VPN.
When the "CPU not fast enough..." message comes up and the video starts to play, it does play at super speed (4x or so) for about 5 seconds before it settles down to real time, so I guess that might be a buffering issue?
Any idea if Ken may have done something in v4.6.5.0 that would cause this to happen?