The background of multitasking view looks corrupted almost every time after resuming the system from suspend and sometimes the wallpaper also looks the same way. I have Nvidia GTX 660 and the latest driver (nvidia-375) installed from the AppCenter.
Same problem with me, Nvidia GeForce GTX 1050, using the latest 384.98 Nvidia Driver.
The problem disappears if I switch the driver to use the "Power Saving Mode" which disables the Nvidia GPU and uses the Intel one instead - the return from suspend is much faster and there are no visual defects like the ones on the picture above.
It looks like a problem with the driver.