I loaded up the original Bioshock with the 750M and found it smoothest on 1440x900. Anything higher, especially 2880x1800 and it seems to fall apart which was disappointing. I tried the game with the Iris Pro graphics and I can max out the resolution to 2880x1800 and its still playable... With max detail. I then booted up photoshop with the Iris Pro and notice that painting is more responsive than with the 750M... The pen tool rendering has a slight advantage to the 750M with the drawing mode set to advanced. Could I have a defective unit? Is the 750M that bad? Is Iris Pro that good? Driver issue? Quite disappointed since paying a substantial premium thinking Id be getting better performance... Can anyone confirm or explain this?