Ok, thanks, lol. I knew somehow this just wasn't making sense. I thought the OP was just trying to VNC for maintenance other light duties. I wasn't thinking he was trying to run the game's client remotely! Maybe that just a reflection of my lack of interest in gaming generally.
Yeah, running full motion video of any kinds, even say MCE, is always a problem. VNC/RDP assumes screen updates are relatively limited. And sometimes there are technical limitations if the app is using say overlays, and the remote desktop doesn’t support it (you’ll just get a black screen).