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Please see the official X‑Plane Support page for help.
I'm not with Laminar Research, just a fellow simmer in the UK.
With regard to your post about anti-aliasing, can I presume that you have been into XP11 graphics settings page to adjust the AA as required? Please see photo below.
You may also wish to look at a video from the well known simmer Q8Pilot on the subject of XP11 settings in general, which can be found at the following link:- https://www.bing.com/videos/search?q=q8+pilot+x+plane+11+settings&&view=detail&mid=F0C0EB12F868099DCE34F0C0EB12F868099DCE34&&FORM=VRDGAR
Hope this helps.
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