In-game (x64 or x86 version), windowed. ShiftWindow (+ border = borderless). FOV Fix: Hover at window top-left for menu; Settings, Rendering Options, change "lateral field of view" to 93.4, press Esc to close (FOV is approximate, change as needed; default was 60).
(PLP screenshot with bezel effect. HUD view via Shift+W)