Just duplicated the "W" key issue.
Offline my gunnery terrain. Tested "W" key at spawns all GV accelerated out of first. Then I tried the .sliders command to adjust the visual environment. Once I had that set, spawned up onto a hill, hit Shift_W and the GV was stuck in 1st. Pulled my CH throttle and joystick USB, tried Shift_W and W again and vehicles accelerated past 1st. Closed the Beta, plugged the CH back in, restarted back on my terrain and Shift_W and W keys worked.
These were the slider settings I found looked best to me.
ShapeSt - 1.610
Terr - 1.402
Trees - 1.805
Gamma - 1.3
In win7 is there any setting to tell the OS not to auto install drivers for a device? Or should I install the NVIDIA Hi Def sound drivers, THEN disable the device? This is happening when Win7 auto installs the windows drivers for the Hi Def audio device on my NVIDIA card. When I ran the NVIDIA install I did a custom so I could tell it not to install the Hi Def audio device.