marsman2020

The aerodynamics of an airfoil or fuselage operating in the supersonic regime are much different then in the subsonic regime. There are also major impacts on how for example engine inlets work to manage shockwaves and ensure the engines stay happy. Just because you can change some parameters and get a fast KIAS value doesn't mean it's being properly simulated.

I agree. I'm enjoying the MB-339 and the JF Arrow but it's difficult to justify spending a bunch of $$$ on something where one of the primary flight displays is wrong.

Without a way to implement a collimated HUD a lot of military aircraft make no sense to me to put in the sim.....

We are 6 months into this and each patch brings new things we get to wait 4+ weeks to be "resolved" (for some strange MS/Asobo definition of "resolved"). If there were a way to stop updates I wouldn't begrudge someone using it. It won't look any worse then FSX. Of course you'd need to stop updating and freeware and payware addons at that same point to avoid creating incompatibilities. And there would be no sense in bugging any developer about any issues, you'd be "on your own".

The sim runs in 'potato mode' (terrain looks like FSX) with Bing Data and Photogrammetry turned off. You can preset weather and turn off multiplayer traffic. It should be theoretically possible to run an older version without hitting any of the external servers in a way that causes any issues (either for the client or the server). But I'm not aware that anyone has developed a procedure to do this. And the procedure would be different for the MS Store version vs Steam version. During the Steam server hiccup the other day I was able to put Steam into Offline mode and start the sim with no connection to any X-Box server with no issues.

You want Modern flight model for sure. You just need enough deadzone to ensure that your stick is outputting '0' for pitch and yaw when you have released it. You can see what each axis is doing based on the circle which follows the curve as you deflect it in the Sensitivity settings. Have you fully deflected your controls through their range prior to takeoff? I've had some oddness when I haven't done this.