I am running Antergos Gnome (v. 3.26.2) on a 2011 Mac Min (Intel graphics), to it I use bluetooth touchpad and keybaord. Since some update, a month or so back, the touchpad is really choppy and every now and then completely stops during Wayland session. When it stops I have to lift my finger and put it down again at a slightly different spot of the touchpad for the pointer to start moving again. Actually the touchpad is also acting the very same way during the login screen… In X everything is just fine :-/
Maybe some Wayaland/GDM -issue? Would need some help figuring out what is wrong.