Huh?


Graphics card work only in Workbench meaning, they need a graphics system (like P96 or CGX).
Native modes are handled by Scandoublers/Flickerfixers and not RTG Cards.
PicassoIV happens to have an awesome SD/FF and doesn't simply passthrought the native screenmode but scandoubles it as well!
Choosing between SD/FF and Scart only depends on what monitor and expectations you have

Most LCD/TV's don't sync on PAL 50Hz screenmodes since they require 60+.
So... in this case PicassoIV's Scandoubler, Indivision scandoublers can give 60+ Hz for the LCD monitor syncing. That ofc creates some alteration in the scrolling smoothness as it's not the meant to be 50Hz.
For CRT monitors 50Hz work just fine without scrolling issues.
Scart works ok, but it's not as crystal clear as a Scandoubler.