Need help with a map, M3 Stuart and invisible tanks.

GeneralDirection: Make sure you disable Triple Buffering as well, as that can cause issues with invisible tanks. You'll need to completely restart the game in most cases for this settings change to take effect.
Working on reproducing your other issue now to see if I can offer any help.
Just so I can go about this the best way possible, can you answer the following?
- Your video card (and driver version)
- Your graphics settings (if custom, just let me know what you've changed)