I can't recall precisely, but I seem to remember in a previous SpaceInvaderOne Mac OS X video, the recommended remote desktop software of choice was NoMachine. I am not sure about anybody else, but SplashTop has been complete trash for me. Connecting from a Win10 client to the Mac OS X guest VM, the display is sluggish and corrupts occasionally, the mouse pointer lags horribly, and I'm unable to even get the correct size running. I have none of these problems with NoMachine. Maybe it's ok with the default 1080p setup but it doesn't suffice for high res.
Here's what I did to get a high res desktop going:
- Boot VM as normal with an Unraid VNC connection
- Go get Clover Configurator, mount the EFI partition
- Change display resolution to 2560x1600 in Clover (native res of my monitor)
- Shut down VM
- Went into the VM BIOS and hit F2 a bunch of times, changed display res to 2560x1600 here
- Booted the VM, loaded SplashTop
- Tried a bunch of stuff to get SplashTop working properly, including changing the NIC to E1000 in the Unraid XML, no love
- Installed NoMachine, configured it and have been using it since
I also tried TeamViewer, it was comparable to NoMachine once you enable direct connection mode. It's more 'busy' though; prefer the simplicity of NX.
Performance in all 3 seemed to be better with the vmxnet3 driver; have not tried iCloud or any other stuff.