I had a chance to do a short guest flight myself onboard the former east german MiG-29 cockpit simulator. It was still used then by the Luftwaffe evaluation squadron at Preschen back in 1991. This used a real model and a black and white TV set for outside forward views. No motion but rudder pressure. Surprisingly "real" given the very limited infrastructure. Everything was containerized and movable by trucks. So that one might likely have ended up at Laage.
I have seen a similar sim at Finow airbase north of Berlin in the early 90s which was still russian operated back then. They had two landscape models there. One for pattern work and another "endless" belt-type one for bomb runs.
Finow's aerodrome model (upright on a sidewall):
MiG-29 flight simulator
P.S. Look at those turnout scratches behind the lower taxiway
