Flashing screen when changing views

Hi everyone, I’m experiencing flashing screens when changing views from cockpit to external views.( or viceversa)
This issue start after SU5 but still persist after WU6 (world update 6 not installed, only installed mandatory update)
The problem disappears when I leave the airport, after take off, seems to be related to some kind of memory leak at complex scenery.
I wonder if someone have the same issue.

Res screen: 1080p
Render scaling:100
Vsync off in game , set to fast in NCP.
Display driver 471.96

I7 10700
RTX 2060 super
M2 Nvme
PC rig only for MSFS.
Hags: ON
Game mode: ON