A strange bug when pushback with fnx320

[Xinsheng]

Hello guys, I have encountered a really strange bug when pushback with fenix320. When I started to pushback, about 2-10s later the GSX PRO got crashed suddenly.
The models(like pushback car, workers, everything) disappeared suddenly and I have to restart the gsx.
My aircraft's alarm goes like "stall stall" and it shaked strongly.

My version is 2.2.3, and my msfs is the latest. My fenix320 is also the latest version.
My scenery is ZBLA from flightsim.to.
(I guess it is caused by senery, but i can not prove it)
I'm confused about it. I still waiting for help.

[virtuali]

(I guess it is caused by senery, but i can not prove it)

It's very likely the scenery: if there's a sudden ground elevation along the pushback route ( which surely isn't there in real life, otherwise it would be very dangerous to pushback there ), it will cause that.