Running i3wm with picom, tried turning vsync on and off, but regardless of that xrandrs refresh rate doesn’t change anything. 144Hz and 48Hz both feel the same, that is 144Hz smooth.
xrandr output
❯ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 16384 x 16384
eDP-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 301mm x 188mm
1920x1200 144.00 + 120.00 96.00 72.00 60.00 50.00 48.00* 60.00
1920x1080 144.00
1600x1200 144.00
1680x1050 144.00
1280x1024 144.00
1440x900 144.00
1280x800 144.00
1280x720 144.00
1024x768 144.00
800x600 144.00
640x480 144.00
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
DisplayPort-3 disconnected (normal left inverted right x axis y axis)
DisplayPort-4 disconnected (normal left inverted right x axis y axis)
DisplayPort-5 disconnected (normal left inverted right x axis y axis)
DisplayPort-6 disconnected (normal left inverted right x axis y axis)
DisplayPort-7 disconnected (normal left inverted right x axis y axis)
DisplayPort-8 disconnected (normal left inverted right x axis y axis)
eDP-1-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-1-0 disconnected (normal left inverted right x axis y axis)