I recently bought the R-GO Split keyboard too and on Ubuntu 20.04 (Gnome) it was very laggy. What I did to get rid of the lag was to simply switch from Gnome to KDE Plasma Desktop. Switching to Wayland worked too, but unfortunately, Wayland was causing problems with Skype and Audacity. So that's why I'm using KDE now. It might take some time to get used to KDE Plasma Desktop but it's a great Window Manager and seems to be a lot more stable than Gnome and Wayland.
I also tried to switch to the Brasilien keyboard and commenting out "modifier_map Mod3 { Scroll_Lock };". But it didn't work even after restarting several times and making sure that the Brasilian keyboard was selected. Maybe it worked with an earlier version of Ubuntu but at least for me with Ubuntu 20.04 (Gnome) it didn't have any effect. Hope this is helpful! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777708 Title: Desktop briefly becomes unresponsive when typing on 2 keyboards at the same time To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1777708/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs