> The usability was surprisingly decent. LibreOffice and GIMP worked fine, although there was a bit of a lag. I would estimate about 70% of native performance, but still very usable.

You can get better performance and lower latency for your remote desktop and eliminate lag by using a gaming-focused remote desktop server, e.g. using Sunshine: https://github.com/LizardByte/Sunshine .

You will need to give it access to a gpu though.