If anyone wants a good flickerfixer they can always buy a used DCE Scan Magic from someone. I have one since forever and it is awesome. It displays all 16.7 million Amiga 1200 colors and it does NOT promote PAL into 60 hz so all PAL games look great! I mostly only play PAL games.
DCE ScanMagic works in 1280x512 mode, you can bet the GBS does not.
I had a DCE scan magic external and I couldnt get PAL modes to work on my dell monitor.. ntsc looked great though. Perfect picture. I have an mk2 now operating in all modes on my vizio hdmi tv but the scaling and positioning are all off. I wonder if we will ever see the new core and tool

I have a dual monitor setup with the mk2 on the 22" HDMI vizio tv and a sony 20" RGB pro studio monitor off rgb output. Ill tell you this for any gaming or demo watching 100% better on the RGB monitor. But for productivity mk2 in highgfx is sweet.