I'd trade half my GPU performance for the NVIDIA drivers not freezing my system on wake-up. The new half-open ones arguably made it worse, it consistently freezes now.
If you're using DisplayPort, try switching to HDMI. (Really.) For me it made the freezes much shorter. It's a bug in their driver related to the connected monitor(s).
I had switched back to Windows after years of issues with Linux drivers, I needed a new PC, and I needed CUDA for college and tinkering.
Now, it's been barely a couple of months since I reinstalled Ubuntu, and a couple of weeks since I found out the latest release runs even worse, so this is new to me. I don't plan to use Windows at home ever again, so I could sell my GPU and buy AMD, but so far I'm simply disappointed.
Ugh, that sucks. It makes sense. I'm somewhat optimistic that as the open-sourcing effort continues, more and more of NVIDIA's driver stack will be open-source and it will see significant improvements, too.