Shadows in various games had a major impact always on the FPS (Frames per Second). So here I had tried a few thing to fix the issue and I am sure enough that this is going to fix things. I am going to give a bit handful of settings here. This will be helpful for those who want to fix the fps issue of the game. And it is also better if you can share your settings.
This setting is related to the quality of shadows in game. And this put a major impact on the fps. If you keep this high then the game output will be slower. A setting of 8192 here can reduce to 4096 which can help you to achieve more fps. In conjunction with the above setting, the "fShadowDistance=xxx.xxx" is critical. Obviously this affects the 'range' that Shadows can be seen.iShadowMapResolution=xxx
Unfortunately, lower the ShadowMapResolution setting, you can see more 'shadow shimmering'. This is not going to affect your gameplay. Shadow shimmering is particularly bothersome to some. Here you can go to iBlurDeferredShadowMask=x and make it proper to some extent. This affects the crispness of the edge of shadow. A low setting will give a crisp edge whereas a high setting (such as 9) will make it blur. Any changes in this setting does not seem to affect performance.
Using a combination of these settings, a player can run the game more properly on old system also. Fast fps means good gaming output. A player with a better system can achieve high quality shadows with a good I want good shadows and my system is of medium to good quality, so I have opted for the following settings:
IBlurDeferredShadowMask=4 (Gone for some blur on the close up edges)
fShadowDistance=2000.0000 (I want a decent quality shadow so I have lowered the distance).
ShadowMapResolution=4096 (This is as high as I can go for Shadow quality).
It should be noted that none of the settings below seemed to have much impact on performance or Shadow Quality:
iShadowFilter
iShadowMaskQuarter
iShadowMode
iShadowSplitCount
iShadowMapResolutionSecondary
iShadowMapResolutionPrimary
fShadowLODStartFade
fShadowBiasScale=0.2500 (Although this should be left as is, changing this has strange effects on the shadows)
I would be interested to hear about your experiences.
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