Hello Dennis,
With respect to the 1+ minute start-up delay. This has been partially correct in V19B2. The use-case that was mentioned earlier no longer exhibits a startup delay (thank you for addressing that).
Unfortunately, if I have the Projects, Defs, Symbols, Open, Class, and Files "Tool Windows" docked and file on in a buffer window, SlickEdit V19B2 is unresponsive for 1+ minutes when it first starts up. Again in V18, there is no delay.