I don't know if anyone else has had this issue, but I know it's not a CF one: Sometimes music is a little choppy when I am playing with the Nav up, which I am assuming has to do with my lack of processor power and/or RAM. I picked up the new Creative X-Fi external USB dongle a while back and tested it in the car and it pretty much fixes that problem because the audio is processed through the USB device not with the onboard audio (I'm assuming this is the reason - correct me if I'm wrong). So, it seems a USB audio device would take the load off your processor/mboard if you have issues with choppy playback...
Re-do fabrication of screen [DONE]
Add mini-USB and micro-USB power from M2-ATX [DONE]
Teardown PC [100%]
Add HDMI > VGA converter [0%]
fwiw, I switched to the blue skins then back and the problem remained.
I'll live with it for now and re-install when RC4.2 comes out ("soon", right?) since it's such a PITA to deal with.
spotted another bug. the view modes in Nav don't correlate to what shows up on the screen, eg. at one point I clicked to change view to 3D but I noticed that the view mode still said "2D (night)". if i disregard what the actual view mode states on the button and just go by what shows up on the screen it's all good