Make me wonder. Has he tried bgfx crt-geom or bgfx crt-geom-deluxe? I didn't had problem using those on the 0.192 and below. No cut off top, bottom, left and right.
He have to turn off some of the default HLSL settings to get the screen fix. That is what I did so many of times.
I wouldn't recommended 0.193 because bgfx got a small broken. Stay away from 0.193 if using bgfx.