I spent a lot of time testing why this is happening. (Historically I am a retired engineer, in one case was a Q/A manager). Well, the bottom line I found is this.
toast 17, on initial load, tries to load your entire iTunes library. In my case it is large. Though from the number of entries loading SLOWLY I do not think large or small is the issue. Try this, if it works for you, maybe the same issue as I discovered with many hours of testing and review of the logs.
Go to the itunes folder in MUSIC and rename it to iTunes.2
Yes, this will break your itunes. This is just a test. Once you do this, reboot.
Then try to reload toast 17
This seems to be the issue.
Fort Myers, FL