I’m not developer and i’ve tested so far two leaked (or not leaked? whatever…) technological demos: Elemental and Realistic Rendering (the room) and i’ve found out weird problem. I understand, i’m aware, these demos are not for public and they may contain bugs, etc.
First… Technical specification of machine:
Windows 8.1 update 1 Enterprise x64
CPU: AMD FX-8320@4,0GHz
RAM: 16GB DDR3
GPU: Gigabyte Radeon HD7790 1GB OC
Soundcard: Cerative X-Fi Titanium
PSU: OCZ ZS550
GPU driver version: 14.3
As display i’m using 37" tv connected via hdmi and to make text more readable in web browsers and other text-related software i’m using available in OS option of dpi scaling. I’m usually disabling it for games in properties of game executable file because in games dpi scaling sometimes causes some UI/HUD problems. By this habit i disabled dpi scaling for these demos and here problem appears. When dpi scaling is disabled for specific .exe performance of demo dips down 40-50%.
Realistic Rendering (aka the room):
with DPI scaling: avg fps is 45
without dpi scaling: avg fps is 90
with dpi scaling: avg fps is 36
without dpi scaling: avg fps is 23
When i check in properties of executable option “Disable display scaling on high DPI settings” fps is going way down.