Unless you have the heavy analogue Apple CRT that was specially made for it, composite video output on the Apple IIgs is utterly dismal:
![](http://scruss.com/wordpress/wp-content/uploads/2018/05/iigs-composite-1024x880.jpg)
Adding an Apple IIgs → SCART cable through a SCART to HDMI converter is much better:
![](http://scruss.com/wordpress/wp-content/uploads/2018/05/iigs-scart-1024x850.jpg)
There’s still a little bit of shimmer to the background, but at least text is legible.