I know it's a few years old now but I just found this thread after googling Solidworks and OpenGL.
I guess i7's are now a bit more common (just had one delivered) and found that turning on OpenGL is causing a lot of flashing when in Photo360/Real View mode. As for slowness, not really, I guess the processor is more than capable on it's own?
From what I understand I need to turn it off to let the graphics card: NVIDIA Quadro 2000 1GB do all the work.
I would think that slowness would depend strongly upon what is on screen. Large assemblies with lots of complex surfaces should be a good test.
Right, you need to turn Sofware OpenGL off to get any benefit from your graphics card. And, as you apparently already figured out, you need to close out of any SolidWorks parts or assemblies before it will let you change the setting.
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