What is the base adress of your card? On my card all DIP swichtes except of 4 are up. Mine is set to adress c800h. I use a NEC TFT 1970nxp which can go up to 70Hz and maybe a bit above of that. I also have only the choice of 1280x1024 and 1024x1024 in 16 colors.
I just found a terminator resistor for VGA cards, so now I also can test VGA passthrough, maybe your tipp with DIP 8 is helpfull for me, let's see this evening...
Do you know how big is that adress window at c800h? I ask because I use QEMM and I want to shrink that adress window as little as possible. At the moment I have a reservation of x=c800-c8ff.