FL HD Installation was not compatible at all..if i remember well....
But i could help you get it work on 21:9 resolutions up to 3440x1440 but... Cant help you with 32:9 resolutions, not usually standarized and only few games actually support it (very niche) ubless you wanna be trying each to another and another way, i told this cause i tend to play on desktop with 2560x1080 of resolution so maybe 3440x1440 should take same settings, that is why you are seeing that behavioir on your screen, after any 21:9 escalation is almost impossible make it fit for it
I don't mind trying at 3440x1440 honestly. I also had the same issues at that resolution, so if you have any specific config or trick I am interested. In the meantime, I'll try setting my native resolution to that and see if it supports it better. I under-estimated the power of my craving for FL
I'll keep you posted in case it can help someone else as well.
Do you have any discord we can talk?
I would prefer to help you there as here he and me have hating towards us from all community...so to prevent any "weird understandings" i belive better if we try help you internally over discord, and lets make some testing