Here's how I use it.
I have mini charts for all ports that I have open, so I need the backfill for them. I often start late in the morning, so I don't have the data .
As for Scan, well, I'm having to remember to turn it on every day. I thought computers were supposed to make life easy ?
I don't care if there's a delay before you autostart , but don't see why we can't do that, if the user requests it.
I don't have 100's of stocks on display, so in my case the load is minimal.