Amiga computers were always based on the fact that they would use a low refresh frequency of 15khz to be compatible with televisions. The 2002 monitor only supports this mode, thus all the screen flicker at higher resolutions as it 'interlaces' the screen to get double the resolution. The A1200 can actually use other video modes of 30khz and up (standard VGA), but a compatible monitor would also need to be required. There are very few monitors on the market that will support both the 15 and 30khz rates that an A1200 can produce; the older Amiga RGB monitors only sync'd at 15khz while PC monitors comming out nowdays support 30khz and above. Commodore made some 1950 and 1960 monitors to support both frequency ranges, but they are a little hard to come by these days. There's always the option of installing a 'scandoubler' which will double the 15khz video signal to 30khz for compatability on normal PC monitors.
