I encounter disconnections in full flight

Hello, since the new patch update I encounter disconnections in full flight and it is very unpleasant especially when you have already spent a lot of time on your plane on the ground.
Yet I have a very good internet connection of type Fiber Optics. I checked my connection after disconnecting from MSFS-2020 and my internet connection was very good so why this problem? It’s been the fourth time I’ve had this problem.
This is starting to bother me very seriously about this problem. Finally before I had less problem than with your new patch update
Can someone tell me if you’re having this problem?. Thanks for your answer

I do have issues only with MSFS, couldn’t find a fix, yet
My speed is 1 Gbps