Modo is a bit strange when it comes to performance, especially with Advanced GL viewport mode. For instance, I used Modo before with both a GTX 660 and 650 (both were desktop versions and had 2gb vram). The 660 had no problems, but the 650 could barely handle even the simplest of scenes.
Started with Maya, pursued with 3DSMAX and XSI, learnt Blender last. I hated it at first because I thought it was too different from the other one. Then I gave it the same dedication as I gave to the others.. Result: I'm faster at modelling with it than the others. It's all personal really. I discovered I'm much faster…