Stick the PC monitor on the Amiga and - surprise, surprise - the flicker disappears.
Scratches head.... HUH? really how do you figure that... Actually what happens is you need to SET the screenmode to VGA compatibility mode, turn off the machine, connect the PC monitor...and reboot.
So now you're stuck in WB or screens that can open in VGA compatible screens if you want to use that PC montiror.
Wanna play a game? too bad...(oh that's right I have to have a TV around... WTF?) work with any mode higher then 600X200 prepare for mind numbing flicker, your logic of blaming the display is strange becuase... the AMIGA is feeding the display with a low freq flickering display.
Hence the need for buitin Flicker fixer. Hence the laugh out load reactions from anyone who had used a $800 386sx clone in 1992 and see's the Amigas flckering display.