Alright, so I've searched and searched but while playing Apex Legends, turning nvidia reflex on/off changes the fov a noticeable amount.  I'm trying to figure out a way to measure this difference, as the result is not reflected in profile.cfg

Also, cl_showpos I would imagine would not help with its limited velocity, angle, or position data. 

Any takers?

Tested it now, and there's no change in FOV here. However, if you have set the FOV above 1.55 in the config file, changing any setting in the video page, like reflex, will revert it to 1.55.

Does it the FOV change back and forth every time you turn it on and off?

2 minutes ago, DPI Wizard said:

Tested it now, and there's no change in FOV here. However, if you have set the FOV above 1.55 in the config file, changing any setting in the video page, like reflex, will revert it to 1.55.

Does it the FOV change back and forth every time you turn it on and off?

This must be what's happening if you couldn't produce it changing back and forth.