Currently I have one monitor plugged into my motherboard and 2 into my GPU (all of them are displaying fine).

The GPU monitor is set to 144hz but moving windows around etc. is clearly at 60hz. I added xrandr output below

Screen 0: minimum 8 x 8, current 5760 x 1080, maximum 32767 x 32767

DVI-D-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm

1920x1080 60.00*+

1680x1050 59.95

1440x900 74.98 59.89

1280x1024 75.02 60.02

1280x960 60.00

1280x720 60.00

1024x768 75.03 60.00

800x600 75.00 60.32

640x480 75.00 72.81 59.94

HDMI-0 disconnected (normal left inverted right x axis y axis)

HDMI-1 disconnected (normal left inverted right x axis y axis)

DP-0 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 532mm x 304mm

1920x1080 143.98*+ 120.00 119.88 100.00 60.00 59.94 50.00

1680x1050 59.95

1600x900 60.00

1440x900 59.89

1280x1024 75.02 60.02

1280x800 59.81

1280x720 60.00 59.94 50.00

1152x864 75.00

1024x768 75.03 70.07 60.00

800x600 75.00 72.19 60.32 56.25

720x576 50.00

720x480 59.94

640x480 75.00 72.81 59.94

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)

HDMI-1-1 disconnected (normal left inverted right x axis y axis)

HDMI-1-2 disconnected (normal left inverted right x axis y axis)

DP-1-1 connected 1920x1080+3840+0 (normal left inverted right x axis y axis) 477mm x 268mm

1920x1080 60.00*+

1680x1050 59.95

1600x900 60.00

1280x1024 75.02 60.02

1280x960 60.00

1152x864 75.00

1280x720 60.00

1024x768 75.03 60.00

832x624 74.55

800x600 75.00 60.32

640x480 75.00 59.94

720x400 70.08

HDMI-1-3 disconnected (normal left inverted right x axis y axis)

1920x1080 (0x1be) 148.500MHz +HSync +VSync

h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz

v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz

1680x1050 (0x1bf) 146.250MHz -HSync +VSync

h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.29KHz

v: height 1050 start 1053 end 1059 total 1089 clock 59.95Hz

1600x900 (0x1d6) 108.000MHz +HSync +VSync

h: width 1600 start 1624 end 1704 total 1800 skew 0 clock 60.00KHz

v: height 900 start 901 end 904 total 1000 clock 60.00Hz

1280x1024 (0x1c2) 135.000MHz +HSync +VSync

h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz

v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz

1280x1024 (0x1c3) 108.000MHz +HSync +VSync

h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz

v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz

1280x960 (0x1c4) 108.000MHz +HSync +VSync

h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz

v: height 960 start 961 end 964 total 1000 clock 60.00Hz

1152x864 (0x1da) 108.000MHz +HSync +VSync

h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz

v: height 864 start 865 end 868 total 900 clock 75.00Hz

1280x720 (0x1c5) 74.250MHz +HSync +VSync

h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz

v: height 720 start 725 end 730 total 750 clock 60.00Hz

1024x768 (0x1c6) 78.750MHz +HSync +VSync

h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz

v: height 768 start 769 end 772 total 800 clock 75.03Hz

1024x768 (0x1c7) 65.000MHz -HSync -VSync

h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz

v: height 768 start 771 end 777 total 806 clock 60.00Hz

800x600 (0x1c8) 49.500MHz +HSync +VSync

h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz

v: height 600 start 601 end 604 total 625 clock 75.00Hz

800x600 (0x1c9) 40.000MHz +HSync +VSync

h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz

v: height 600 start 601 end 605 total 628 clock 60.32Hz

640x480 (0x1ca) 31.500MHz -HSync -VSync

h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz

v: height 480 start 481 end 484 total 500 clock 75.00Hz

640x480 (0x1cc) 25.175MHz -HSync -VSync

h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz

v: height 480 start 490 end 492 total 525 clock 59.94Hz