wow that's a lot of games, I'd have to say it is scanning for boxart(etc) assuming your jtag connected to the internet somehow. Is it a black screen that pops up each time? Thats what happened to me but it turns out it was just downloading box art/game info in this time. After that it didn't show up, but I think a progress screen should be needed as I had this down as a bug until I waited like 30 seconds, lol.
I see the same issue in that each time I load FSD and go to the Games tab it can take up to a minute to scan before I'll see the games. It doesn't appear to be downloading anything, but rather a caching issue or slowness.
The only other issue I see is that the GPU is running at about 70 degrees in the dash. Other than that great dash.