I can confirm this (1 minute high load) for manually creating and using a .Xmodmap file for my fedora 23 with Xfce 4.12.
simple commands
xmodmap -pke > .Xmodmap xmodmap .Xmodmap
in home directory produce it
I can confirm this (1 minute high load) for manually creating and using a .Xmodmap file for my fedora 23 with Xfce 4.12.
simple commands
xmodmap -pke > .Xmodmap
xmodmap .Xmodmap
in home directory produce it