Retina Z3 unclear screen

[amiga4001]

Wanted to try me my retina card instead of my picasso 2 in my A4000T.
Thought I could connect the signal from my GVP IV-24 (as scandoubler) and the retina signal through a dataswitch box.
But when screen comes on picture is unclear(fuzzy).
When I plug the monitor direct in the retina the quality improves a lot but still is not totally clear.
The picasso 2 also suffered on this a little bit.
Dont think it is the monitor to blame as nomal(doubled) screen looks good.
Running on picasso 96.
Monitor is running on 64 Khz.
Anybody also got these kind of experiences?

[amiga4001]

Already thought me something like that.
But I can not shorten the cables as the monitor is now directly attached to it.
The switchbox is indeed a manual one.
Whould a automatic one help?
There was a german company selling them(for internal use) but I can't recall which one.
Maybe I should buy me one of these to get both my signals on my screen.
How would a flat screen work?

[amiga4001]

Have you installed Picasso 96?
I removed the retina card from the zorrobus because I got strange errors.
I must say the screen looks allright now.
Is there a difference in switch boxes?
I mean for data/screen?
Maybe it was the two cards together what produced the disturbance when directly attached to the retina.
Think I will stick to my picasso.And leaf the retina on the shell.
That is till I find a better solution for switching screenmodes.