No, no and...no.
I was waiting for the latest release (22.0.28) to see if that problem has been corrected...it has not.
First (your third point). there is nothing started with Windows.
Did not understand what you meant with your second point...however I do know the difference between the program and the install package.
Your first point 'It always load the library' Yes I agree, but when you close the program and start it over again without changing libraries, it should not reload it like it was a new one....
I get the window...
Please Wait...
Loading library...
and it takes more than a few minutes to do it. I still have MC21 running on the same library and I never experienced that problem...and I have been a MC user since version 17. I am pretty sure that in the earlier releases of MC22, that problem was not occurring. I might add that my music files are on a Synology NAS, but that has never caused a problem.
Just to prove my point I installed MC 22.0.28, started it, waited for it to load the library (close to 10 minutes) closed the program and re-started it and guess what...have to re-load the library again! Hope you solve this soon!