I'm having a weird issue with Fallout 4 and my 144hz monitor that doesn't seem to pop up in any other game. When I have the monitor set to 144hz under the monitor refresh setting in Windows 10, the framerate will not exceed 48FPS. When I change the monitor refresh rate to 60hz, it hovers around 60fps. I've uninstalled video drivers and updated Crimson multiple times now, as well as making sure Fallout is up to date and the game cache verified. Any ideas on how to troubleshoot further or should I just expect to have to change my refresh rate each time I want to play Fallout?
Sapphire Radeon 390
Windows 10 64bit
Intel 4690K (not currently OC'D)
Display Device(s) and Connection(s) Used
Nixeus VUE24 connected with DisplayPort