Bioshock 3 Dynamic shadow issue

agnes · 25 Mar 2013 at 23:21

Hi guys,

After experiencing fps drops from 80fps to 30fps in totally random situations. I decided to investigate. I have found an issue (with 310.90 and 314.22) with possibly Nvidia only?

Anyway, with Ultra dynamic shadows, these random drops occur, without, FPS stays permanently high and solid.

Comparison:

With ULTRA

Very High (one down from Ultra)

The only difference I see, is the window. I am going to test outside, but honestly, with vsync on, constant fps of 60 without the ultra setting. With, it would drop to a solid 30 or go between, but never below 30???

Just thought I would let you know as I don't think I'm the only one suffering with this...

valkynaz · 26 Mar 2013 at 00:34

To be honest I cannot see any difference between ultra and very high. Maybe it's just because of how small the screenshots are but I can't see anything different.

agnes · 26 Mar 2013 at 09:20

shankly1985 said:
D:\Program Files (x86)\Steam\SteamApps\common\BioShock Infinite\Engine\Config\BaseEngine
Scroll Down To [SystemSettings]
VsyncTo60WhenUnder30=False Change to VsyncTo60WhenUnder30=True

Save and close and Right click BaseEngine and set to read only.

Tested on known part where frame rate hits 30FPS now its a solid 60fps

Grats to Shankly! This works a treat.

mrk · 26 Mar 2013 at 09:26

Hmm so this means I can put shadows on Ultra then? Neat

agnes · 26 Mar 2013 at 11:29

mrk said:
Hmm so this means I can put shadows on Ultra then? Neat

Yerp.

Darg · 26 Mar 2013 at 11:40

Ah nice, I had to turn off v-sync as with it on it was crippling my framerates to between 20 and 30. With it off it was up above 60. Really bizarre.

As for shadows, the setting probably determines the amount of nearby lights to render shadow maps for. It might be the case that these lights don't have any effect on the scene that you took the screenshot for but are still being rendered just because they're nearby. I've not noticed any lack of quality in the shadows even on High settings and I'm quite picky about these things. I'd prefer the extra 10-15fps you get from dropping the setting down over the almost imperceptible visual improvement.

agnes · 26 Mar 2013 at 11:56

Actually, doing this sets the game to Normal settings... Won't hold Ultra settings.

shankly1985 · 26 Mar 2013 at 12:11

agnes said:
Grats to Shankly! This works a treat.

Glad I was some Help

agnes · 26 Mar 2013 at 12:18

shankly1985 said:
Glad I was some Help

Sadly mate, you was wrong

But helped a lot! It's this file you want to change. The one you suggested does not effect ingame other than reset the options. It's the related windows user config file. Still the same line you pulled though! So couldn't have been done without you mate:

C:\Users\Fresh\Documents\My Games\BioShock Infinite\XGame\Config

You want to change the XEngine.ini

Darg · 26 Mar 2013 at 12:20

Gold medal for agnes!

"Everybody is a winner!" medal for shankly.

shankly1985 · 26 Mar 2013 at 12:35

agnes said:
Sadly mate, you was wrong

But helped a lot! It's this file you want to change. The one you suggested does not effect ingame other than reset the options. It's the related windows user config file. Still the same line you pulled though! So couldn't have been done without you mate:

C:\Users\Fresh\Documents\My Games\BioShock Infinite\XGame\Config

You want to change the XEngine.ini

Thanks I will change that now

Works
Dam since I changed that I was playing the game on Medium settings LOL

Jono8 · 26 Mar 2013 at 18:51

I have made that vsync change but it has not made any difference.

V sync off and i get no slow downs to 30. Vysnc on and it does slow down to 30 in really random places!