Opencpl problems and opengl problems

[raffa]

Hello,

I seeking help from you brain trust.

I have a windows 11 computer connected to a miniplex.
Last year everything was working fine.

This year, opencpn start to close by itself. So I tryed to update to latest version. Unfortunately latest version require opengl. I upedate all my grafic board drivers and everything is working fine, but still on opencpn I can't use mbitles because I can't enable opengl.

I dawngrade again to opencpn 5.6.2 but now my sog goes from 0 to 10 knots and then to 5 then to 28 and so on.
Today opencpn closed itself two time in less then hald an hour....

Any idea? Help?

Thank you