G1000 LCD Control & Encoder Speed

3. LCD Menu Mode. Press and Hold Left "Nav" knob for 3 seconds. 
3a (once in LCD Menu Mode). Press "NAV" knob (knob, not the button) to Enter
3b (once in LCD Menu Mode). Rotate "NAV" small knob to +/- 
3c (once in LCD Menu Mode). Press (not rotate) "Baro" knob to cycle through different video inputs (VGA->HDMI) "
3d (once in LCD Menu Mode). Right "COM" press to Exit LCD Menu Mode 

Once in flight simulator, you would just undock the GPS unit and move it to the unit screen.

4. Encoder Speed Mode. This will enable to increase / decrease encoder speed mode on a scale from 1 to 10 (by default it's 5). However currently, if you increase beyond 5, X-Plane / MSFS will not be able to read it.

You don't need to be in the simulator to complete this. You can do it outside of the sim—just hold the HDG button until the backlight turns off and only three buttons remain illuminated: APR, VS, and FLC.
 
Next, rotate the HDG bug one click to the left to decrease the speed or to the right to increase. The buttons will flash several times. Repeat this process until the buttons flash how many times you need the speed to be on 1-10 scale. You need to set  the encoder speed to 5, if you use an older FW and you should be good to go.
 
Press "HDG" again to exit the encode speed mode.