finally got around to installing this ROM, after few trial and errors I got it up'n running. I can say overall I find it better than nubia stock rom, as I got visible performance boost and battery actually holds longer than what other member wrote (which was the biggest worry initially), even tho I have the phone for 18 months already. Even the gpay works to my surprise which wasn't the case in the stock (probably cause I didn't try rooting it). Few things that I couldn't get to work is for some reason nubia camera app or at least the one thats there (even after installing manually via TWS) it seems to be not as good as stock one, not sure why. Also the hardware side buttons doesn't seem to be working as expected so I went with software ones.
The biggest annoyance so far is the the middle button keeps on blinking even when I don't have any notifications, I would have it disabled at all but didn't found anyway to do it. Maybe someone here has had similar problem?
Main reason that drove me reinstalling to this ROM and which proved successful is getting the huawei health app working which doesn't in stock ROM. That is prerequisite for new huawei smart watch to work with phone, which it does without issue on lineage. Anyway thanks again for all the info and especially author that made this possible and gave my nubia a new life!