Ground plane causing frame rate drop

I have a flight game where the ground is actually moving rather than the aircraft, sort of a visual cheat because it’s in VR and getting the player to move with a moving aircraft is problematic. So because the player position is more or less stationary, I setup the ground almost like a treadmill. Because of this fact, the ground plane cannot have baked lighting. This is causing my frame rate to suffer. It drops nearly 20-30 fps which in VR is not ideal. I also tried having an animated ground texture, but again, I can’t bake that.

Any suggestions on how to work around this? Some day I may find a good tutorial on how to move with the aircraft in VR, but so far I haven’t so I’m forced to use this treadmill method.