I do not see the 8500m listed as being tested even. Must be a new mobile chip for low power..
Tested video cards for Photoshop CS6
Adobe tested the following video cards before the release of Photoshop CS6. This document lists the video card by series. The minimum amount of RAM supported on video cards for Photoshop CS6 is 256 MB. Photoshop 13.1 cannot display 3D features if you have less than 512 MB of VRAM on your video card.
Important: This document is updated as newly released cards are tested. However, Adobe cannot test all cards in a timely manner. If a video card is not listed here, but was released after May 2012, you can assume that the card will work with Photoshop CS6.
Adobe tested laptop and desktop versions of the following cards. Be sure to download the latest driver for your specific model. (Laptop and desktop versions have slightly different names.)
nVidia GeForce 8000, 9000, 100, 200, 300, 400, 500, 600 series
nVidia Quadro 400, 600, 2000, 4000 (Mac & Win), CX, 5000, 6000, K600, K2000, K4000, K5000 (Windows & Mac OS)
AMD/ATI Radeon 2000, 3000, 4000, 5000, 6000, 7000 series
AMD/ATI FirePro 3800, 4800, 5800, 7800, 8800, 9800, 3900, 4900, 5900, 7900
AMD/ATI FireGL W5000, W7000, W8000
Intel Intel HD Graphics, Intel HD Graphics P3000, Intel HD Graphics P4000, Intel(R) HD Graphics P4600/P4700
Note: ATI X1000 series and nVidia 7000 series cards are no longer being tested and are not officially supported in Photoshop CS6. However, some basic GL functionality can be available for both these cards.
I agree. This sounds like an outdated video card driver problem.