On Windows 10 I can play Overwatch at 120HZ. With Lutris the video options inside the game only allow me to play at 50Hz.
See sreenshot:
http://oi67.tinypic.com/fncms3.jpg
This is the output from the terminal:
$ xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 381mm x 214mm
1920x1080 120.00*+
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)