This took me a bit to track down, but I use an ultrawide monitor with a 21:9 aspect ratio, and the FOV is wrong at 95. It needs to be wider to look correct. Not only that, but using weapon models the weapons are cut off on the bottom on the screen. To fix, change your configs at:
C:\Users\<USER>\AppData\Local\Deng Team\Doomsday Engine\runtime\configs\<GAME>\game.cfg
Find and change the following:
# Field of view.
# When FOV > 90 player weapon is shifted downward.
Hope this helps anyone else with this issue. I think this could be fixed in engine, by adding options in the GUI for these two options, or better yet, automatically change the FOV for different aspect ratios.