in the Nvidia control panel - NOT in Nvidia Inspector -
DSR factor -
Go to - Manage 3D settings - DSR Factor - you can set to several optional multipliers of your monitors native resolution
DSR Smoothness - you can set to a percentage of multiplier efficacy - I use 2.00x native DSR factor @ 100% Smoothness efficacy.
You can set any you like - experiment for your own PC's best performance...
*** you must then go to the Change Resolution field in the Nvidia Control panel and change the monitors resolution to the new - highlighted - higher resolution created by the DSR multiplier for it to work.
** then you must either change FSX GUI game resolution to match the new, higher res. - or - leave it at the monitors original default resolution and test FPS and image quality
Clouds in FSX are always going to cause an FPS reduction - the only way to combat that is with CPU power and lower cloud resolutions... Check
Ikea Catalogue and
innovations Catalogue.I have an Intel I5 chip upclocked @ 3.8 ghz and its not enough
to handle heavy cloud layers - I fly with 2/8 cumulus under REX Soft clouds + Rex Essential Plus with reduced textures and Cirrus at no more than 1/8 cloud coverage (advanced weather settings in FSX GUI) in order to avoid FPS impact. Another trick is to switch the flyby camera to zoom factor 4-6.00 - if you are zoomed in close on a flyby with clouds you will get hammered on frames, but zoomed out - no impact.