After all R&D I could not find a solutions for this! Luckily I also have Thunderbolt display, I am survived some how. If not it would be really hard to eork on macbook pro with 100% view in photoshot. I tried zooming in 200%, but I hate when images get pixelated.
upgrade to Thunderbolt, till adobe can fix this.
cheers
Maheshwar Mathad