My hometown, i.e. Wrocław and the Nicolaus Copernicus International Airport, in Poland was presented in quite a detail, only it lacked a small characteristic detail of the SkyTower skyscraper, although maybe MS missed it on purpose, because they were afraid that PEGI and ESRB would increase the age classification for their product.
See here why 
https://demotywatory.pl/4470889/Duma-Wroclawia
One thing is for sure I need to upgrade the GPU to a stronger unit and buy additional RAM
Because it lags terribly, although it is possible to fly
Why am I still stalling even when I’m speeding or am I doing something wrong?
That video was plane abuse 
Just to clarify, it looks like you weren’t stalling just not trimmed. It looks like you are using a KB + Mouse and planes generally like a more fluid slower movements rather than quick jerks. Every time you change the throttle of the plane you need to make small adjustments to the trim.
You can make this easier by turning auto trim on in the realism settings so that the plane wont always pull up or down.
Your landing had me in stiches, i had to watch it again
I used an XBOX controller and a Mouse 
Not sure what its like on on a controller, try smoother movements tho if possible and if you have no binding for trim, set auto trim :).
And if you land like that again take another video i loved it.
