Auto would be a lot more useful if the optimal filter for each frequency was cached, so you only had slow scanning the first scan cycle after boot, or after location control toggling something on.
Maybe, but only if you are stationary. It's function are to aid in filter settings while on the move, where the influenceis from interfering transmitters will constantly change and might need the filter settings to change often.
The stored/cached settings might be the incorrect ones just after a short time and the scanner are stuck in a bad decode mode.
The auto setting only tests 2 different settings, or perhaps 3, Off-Normal-Invert in the Auto setting and Off-WideNormal-WideInvert in the Wide Auto setting. If you select to use Wide Auto it might be that Normal or Invert are the best filter but those are not tried. If all settings where tried in Auto it would slow down scan rate even more. Then you have the IFX setting that also could make a huge difference to an interfered reception, and that are not included in either Auto settings.
I believe that having the filter from auto setting show up on the display would be a big help to see how the scanner actually operates in real life and how often it will change the filter setting. It would also be usefull for test purposes to include a mode where all settings are included in Auto, even the IFX, like when you initially set the scanner up for home use.
/Ubbe