The STFM has 22pF capacitors on the RGB output lines, you could try that on the STE to see if it improves matters.
The STFM is bias slightly different, but its probably down to voltage differences on the GST vs Shifter. Though the circuit is pretty much identical otherwise.
Also C411, I would replace with a good ESR value capacitor, 10uF, and place a 1uF ceramic across it to make sure you are getting a reasonable smooth supply to the RGB amps.
You do not have the required permissions to view the files attached to this post.