Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes
Provide extra information to complete the original description of the issue:
In a comparasion between stock and GNS equiped version of ATsimulations An-2, they handle a bit different not only with flaps, but the GNS one respond different to prop pitch and loose speed different compared to the stock, it’s a bit faster also. Also, it’s noticeable that they have different speed information on aircraft selection menu.
If relevant, provide additional screenshots/video:
N/A