Hi all, I need some help to make sure my Bios settings are correct or if there is something I should try

My system hardware is:
Gemlight GMB-486UNP motherboard
486DX2 66MHz CPU
ARK Logic ARK1000PV VLB video card (32bit) 1MB
SoundBlaster Vibra 16XV
30 pin Ram 4x4MB for 16MB 70ns
230 Watt PSU
20 GB HDD using DDO software

I have been looking over Bios settings here: http://margo.student.utwente.nl/el/pc/bios/ami31.htm and I will try enabling "slow refresh" to see if I can get a slight performance but for now is everything in the above pictures looking right? I have copied a couple of CD games to my hard drive so that I dont have to use the CD and both of them are having freezes and crashes im guessing because of the wait states but I dont know which ones in the Bios to cahnge. With Day of the Tentacle in the cut scene at the start it freezes at some point and locks me out, with Gabriel Knight 1 if I change the mouse cursor with the right mouse button when cycling through them it crashes. Because im using a 486DX2 what is the "Cyrix A20M Pin" option and the "Cyrix Pin Enabled" have I got these set right?