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Witcher 2 putting my CF 7970 onto its knees? - Page 14

post #131 of 144
Yeah not talking about the cutscenes, sorry I didn't make that clear.

Talking about the outdoor area at the start of the game with all the tents. The prequel battle section also suffers from this. I'm guessing lots of other places do too but I have just started the game... I've owned it for a few months but have been waiting to be able to play it with all the eye candy.
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post #132 of 144
You should have no problems what so ever even with uber sampling on .. that is weird

Most probably witcher 2 is not very well optimized , it runs perfectly smooth on a 6970 with no uber sampling .

Uber sampling is what exactly ? what form of AA is that applying ? disable it and run 16xEQ from ccc or 8xEQ

will probably look better and run better .
Edited by Xristo - 5/3/12 at 10:04pm
    
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post #133 of 144
Ubersampling is some special form of SSAA, which is why it is so costly.

It runs great without ubersampling on a single 7970 but I'm bummed that crossfire isn't really enabling ubersampling to be playable, as it should. I dunno if it's the game's fault or the driver's (I suspect drivers), but ubersampling should be between playable and smooth on 7970 CF.
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post #134 of 144
I get 60fps everything ultra except Uber with my rig. Not sure why yours are low.
Edited by arevin01 - 5/3/12 at 10:17pm
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post #135 of 144
Quote:
Originally Posted by jtom320 View Post

The graph showing average FPS in the Witcher 2 with 1, 2, 3 and 4 cores being used pretty much lays waste to any of your claims.
A CPU at 25% total usage can be a bottleneck depending on how the game is coded.

A CPU bottleneck occurs when the processor cannot process the threads faster than they are being received. If a CPU core is running at 25% then it's not processing at full speed. If there is a thread queue greater than 0 while a CPU is running at 25% then there isn't a bottleneck, there's a CPU "problem" which has nothing to do with the game. The Witcher 2 CANNOT be bottlenecked at 25% on a 4 core processor. At the very minimum it uses 2 cores, which would mean 50% total processor time. Other than a couple of posts in this thread from people with no evidence to back up their claims, my searching has told me that this game uses much more than 2 cores if needed. Just like BF3. If the game doesn't need them then they will not be used.

As for my claims... I haven't been proven wrong yet. In fact, from the last few posts here it would seem I was proven correct.
Quote:
Originally Posted by brettjv View Post

Like I say, there are some alternative explanations (although your elaboration on the mechanism involved leaves a bit to be desired wink.gif), but mine is the most likely one IMHO. The case is much more compelling that you gave it credit for earlier, which was basically none.

I didn't feel the need to go into elaborate detail which would simply restate what had already been stated. I put it as simply as I could, nothing more. There are many posts in this thread from people who offered nothing more than an opinion without factual or compelling evidence. Yet you chose to attack me.

I also didn't get into the thread queue, which is the proper way to identify a bottleneck scenario since the thread queue does not care about drivers or coding. But most people don't know what the thread queue is and even fewer know how to check the thread queue.
post #136 of 144
Just figured I'd post screenshots of the phenomenon I was describing... I hope either a game patch or, more likely, a driver release fixes this problem. (Screenshots were taken @ 1080p but tinypic downscaled them for whatever reason... this is with the game completely maxed out including ubersampling)

Crossfire happiness:
338

Crossfire brokenness:
338

Again, this is with a freaking 4.8 GHz 2600k. I refuse to believe there is any CPU bottlenecking going on... no thread on my CPU approaches 100% usage during this game.
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post #137 of 144
Probably poorly coded drivers or the patch broke CrossfireX support.

GTX680 SLI works wonders here on an i7 2600k even @ 4.5GHz I get 99% usage, so I am 100% sure you're not experiencing a bottleneck.
    
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post #138 of 144
So 680 SLI works properly in TW2 with ubersampling?

That makes it doubly frown.gif that AMD doesn't have the driver support for it now, as TW2+ubersampling is really the only thing that needs the power of two of these 7970s at the moment at 1080p.
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post #139 of 144
Quote:
Originally Posted by BigMack70 View Post

So 680 SLI works properly in TW2 with ubersampling?
That makes it doubly frown.gif that AMD doesn't have the driver support for it now, as TW2+ubersampling is really the only thing that needs the power of two of these 7970s at the moment at 1080p.

At 1920x1080 it does play completely fine, but I play at 2560x1440 normally so I do not use Ubersampling as I do prefer having over 60fps at all times. tongue.gif

I must say though Ubersampling is overrated in my opinion, I can't notice much of a difference, except for performance cut in more than half. doh.gif
    
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post #140 of 144
Yeah I mainly want to be able to use it to say that I can... it definitely doesn't make a big enough difference to be worth lousy framerates.

However, I'm figuring that I should, if they ever fix this mess anyways, be able to get minimum framerates in the 40s with it, which is fine by me smile.gif
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