Asobo JFK or add-on?
I use Asobo JFK. I have only one add-on KPDX which I use as a default Home Airport.
Also, do you have other games installed?
Nope.
I also uninstall all planes I’m not using in the foreseeable future. In the past, I used to do clean cache ease after I started MSFS for the day. I haven’t done that in a few months.
I have a very fast internet connection on the order of 500 to 900 mbps.
Frankly, there are too many variables to make an informed judgment from the user’s point of view. Just about every user is/has a unique setup. Between you and me it’s a wonder it works at all.
dw