Thanks for sharing. Just installed Wine and Roon on Manjaro (ArchLinux) and do have the same surprising experience: Roon remote runs smoother and quicker using Linux/Wine (compared to Windows10 on the same laptop). And even the touchscreen of my Lenovo Yoga X1 works excellent with Roon!
Did use the great install script you get over here: https://github.com/RoPieee/roon-on-wine and only had to modify the startup script to set scaling to 2x for hi resolution screen.
I am using Roon trial subscription and one issue why I was doubting about buying Roon has been solved: Linux support for the control app is available, although it requires some hacking.