As soon as game window looses focus FPS raises back to reasonably high values (70-130 range with all quality settings set to max). Most of the time this drops are intermittent and last for one or two seconds but sometimes FPS seem to just stuck as low 20-s values until I Alt-Tab from the game into any application or press Win to show up Start menu. If G-SYNC is active for both fullscreen and windowed applications and in-game V-Sync option is set to "Off" from time to time random FPS drops occur to as low ~22.If G-SYNC is active for both fullscreen and windowed applications setting in-game V-Sync option to anything other than "Off" results in extremely low FPS: ~10 for "Half" and ~20 for both "Adaptive" and "On". Also it looks like that offscreen rendering target dimensions are capped to the current monitor resolution: it is possible to select DSR resolutions in-game but it does not provide expected OGSSAA-like effect. It means that in order to use DSR one would have to switch into desired DSR resolution OS-wide before starting up the game. Actual behavior seems to be "change the dimensions of the offscreen rendering target and blit it to presentation buffer". Expected behavior is to switch main monitor into selected resolution and refresh rate when playing in fullscreen mode. In-game resolution selector is non-functional.
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