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View Full Version : Slowdowns with FEAR SP Demo + 77.77 ??


billos
08-29-05, 06:41 AM
Hi,

Up to now i was playing FEAR SP Demo with all settings max with fw 77.72 with 2 geforce 7800gtx in SLI mode and all was running like silk without problems ([60-100+fps].

I've updated my drivers from 77.72 to 77.77 and now, i'm encountering serious slowdowns [5-10fps] when i activate the slowmo (i hear somewhere that these scenes are quite "shader" hungry).

Do some of u have such problems with Fear Demo and 77.77 drivers ? (could it be a drivers issue on the shaders and/or FEAR SP Demo ?)

Thx

My whole config : Athlon 3800+ Venice + A8N sli premium + 2 Go DDR1 +
2x geforce 7800gtx (gigabyte) + Win XP SP1.

SH64
08-29-05, 07:34 AM
I didnt notice any difference between 77.72 & 77.77

billos
08-29-05, 08:00 AM
I didnt notice any difference between 77.72 & 77.77

Thx for the feedback : i'm gonna check if i haven't done other mods which could explain the performance changes... :confused: :confused:

SH64
08-29-05, 08:14 AM
I dont suppose you have messed around with the SLI profile ?? .. make sure its running SFR. AFR works but with lots of slowdowns.

billos
08-29-05, 09:21 AM
I dont suppose you have messed around with the SLI profile ?? .. make sure its running SFR. AFR works but with lots of slowdowns.


Thx for the information : i used to play with AFR but haven't tried the other SLI rendering profiles : i'll give a try with SFR and see if it improves :D

btw, did u try the SLI 8x or SLI 16x modes with FEAR and does it improve the IQ or framerate ?

SH64
08-29-05, 11:39 AM
btw, did u try the SLI 8x or SLI 16x modes with FEAR and does it improve the IQ or framerate ?

I didnt try it & dont even think about trying it. in FEAR there seems to be a large impact when using AA+Softshadows so i try my best to keep the AA as minimum as possible while retaining a good IQ hence i'm playing @1600x1200,2xAA.

billos
08-29-05, 12:18 PM
Thx for the feedback : i'm gonna check if i haven't done other mods which could explain the performance changes... :confused: :confused:

That's very strange : i just rolled back from 77.77 to 77.72 (with off course, the same video settings in FEAR and the same SLI settings under the nvdidia drivers) and the framerate is now ok for the slowmo sequence .

Summary : (the test has been done from a quicksave and so the slowmo
---------- sequence is exactly the same in the 2 tests)

77.72 with SLI=SFR Framerate = 52fps
77.77 with SLI=SFR Framerate = 7fps :thumbdwn: :thumbdwn:

I can't understand why the difference is so huge during slowmo with 77.77 :confused: :confused: :confused:

Maybe i have settings in the nvidia panel different from yours (i've let all options by default and i've created a new SLI profile on FEAR SP Demo executable with just sli rendering mode activated on SFR)

Thx for your help !

SH64
08-29-05, 12:41 PM
Yeah something must be wrong .. check the Gamma Corrected AA & the Transparancy AA & disable them if needed.
check other options aswell.