Fullscreen (best choice *): SoftTH (DX9 x86). In-game select massive resolution. OR Borderless: In-game windowed, quit. Edit %USERPROFILE%\Documents\ Stalker-STCS\user.ltx (if folder isn't there, find in %PUBLIC%\Documents\). vid_mode ####x#### yours (no border). ShiftWindow (+ border = borderless. If game minimizes, Alt+Tab back to it & try again).
(PLP screenshot with bezel effect)
NOTES:
1. Game looks good, but HUD & FMV videos are stretched. Not a problem.
2. Upon zone change in borderless, must trigger ShiftWindow again (infrequent).
3. * Fullscreen VS Borderless: latter recommended only if at end-game.
A. DX10 lighting option is only available for borderless, but minimal visual difference.
B. Borderless problem: main menu & inventory are completely visible, but partly inaccessible. Both can be used as-is, but inventory becomes pretty annoying.
C. Borderless workaround: use default hotkeys for health, & attempt keeping food on inventory pane's left side. Must occasionally revert to single-screen to sell crap.
4. Optional FOV (not needed, untested): http://community.pcgamingwiki.com/files/file/36-stalker-clear-sky-fov-switcher/
(handgun view)
(comparison: PLP 2h gun view)
(comparison: 16:9 1080p 2h gun view)
View guide for general help with the instructions.