The original backglass did not had controlled general illumination or lamps, it was very static. On top of the backglass was a serie of strong lamps, connected with the Robot flasher of the playfield.
The virtual backglass is not fully authentic, it has animated "Genesis" letters, active both in attract and play mode. The backglass get's illuminated with ball in play modus. The flashers, connected with the robot flashers, are quite strong.
The backglass supports both 2 and 3 screen cabinets.
Hint: if you are looking for an authentic backglass, use B2SServer 1.1 or newer, open Settings and disable the animation.
If you have stutter issues on a slower PC, use Server 1.1 or newer, open Settings and slow down the animation by factor 2 or 4, then it should run fine.