Qfx file format should work fine. The important never take longer than one minute so it sounds like some problem happened. I just updated the code for Bank in Port yesterday since a few Banks such as Wells Fargo updated their format unexpectedly and I had to adjust for that change. I retested all of the files that I have and they all seemed to work but if yours is having a problem importing, the best thing to do is send me a copy so I can test it. You can send it to firstname.lastname@example.org. don't worry, there's nothing in this file that allows me to connect to your bank.