I installed a flashed NVIDIA GeForce GTX 970 in my Mac Pro 2009 (flashed to 5,1) to power my 4K display. I have the most up to date NVIDIA Web Driver available for OS 10.11.3 (web driver is 346.03.05f02). The card works fine except Photoshop, Illustrator and Indesign (all the latest versions) crash about every 15 or so minutes. Has anybody else had this problem or know what the issue could be? I also noticed that Illustrator seems to stop crashing if I disable the "GPU Performance" option, however this makes illustrator unusably slow. I would appreciate any help I can get on this. I'm a graphic designer so I'm using these programs all the time but its become a real struggle.