It seems that OW2 always tries to use my integrated card on my laptop, resulting a very low fps. this was not the case during beta. I can provide screenshot of CPU/GPU usage if needed. in the main menu, I get around 10 fps with my integrated graphics card maxed out and dedicated at 1%.
This sounds daft & may or may not work but if possible open NVIDIA Control Pannel & go to Manage 3d settings & scroll to ‘OpenGL rendering GPU’. change it to the GPU instead of Auto-select. See if that helps, it might force your sys to use the hardware GFX instead of onboard GFX.