DOOM FPS Uncap [GSYNC] - From 60FPS to 200FPS max.

This guide is made to help those with a GSYNC monitor above 60FPS+. Those suffering from a 60FPS cap, even with V-SYNC off both, in-game and in the Nvidia control panel will get their fix in here.

As series of steps. Note, this was tried while in OpenGL 4.5. I am not sure if this works with Vulkan.

• 1.- Go to your steam library.

• 2.- Located doom, then right click on it and from the pull-down menu click on properties.

• 3.- Click under "Set Launch Options"

• 4.- Copy and paste this into the blank bar:
  +com_skipIntroVideo 1 +vt_MaxPPF 128 +vt_pageImageSizeVmtr "16384" +vt_pageImageSizeVmtrUnique 16384 +r_displayRefresh 240

  Note: as far as I know, doom max framerate is 200fps. With a 240hz asus monitor, I am unable to go beyond 200fps. Even while putting more than 200fps on the displayRefresh.

  Note 2: You can change the +r_displayRefresh value to whatever you want. If you have a 120, 144 or 165, 200 monitor just change the value if you need to do so.

• 5.- Click "Save" and open DOOM.

• 6.- You should now have 60FPS+ (120, 144, 165 or your monitor cap, 200max) with GSYNC on.

If that does not work. I am sorry to not be able to help, but I am literally out of ideas. To find this fix, it took me around two hours of research. Digging through forums that had no idea on how to uncap the game, until I found a Nvidia forum. A forum which I will credit in the next section. Thank you.

First credit point goes to: Dynacorp from the Nvidia Forums.
Source: https://community.bethesda.net/thread/14461?start=0&tstart=0

Second credit point goes to Neogaf forum member Dictator93 for fix and icecold1983 as forum post creator:
http://www.neogaf.com/forum/showthread.php?t=1208052

Third point credit goes to Bethesda and ID Software for DOOM.