Shadows FPS impact

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Kubouch
Posts: 14
Joined: Sun Apr 15, 2012 1:38 pm
Location: Czech Republic

Shadows FPS impact

Post by Kubouch »

Not sure whether it is a bug or not but here's the issue: When I change shadow quality it has really huge FPS impact. Bigger than anything else. On high settings the FPS is like 15-25, on medium it struggles occasionally and on low it's absolutely smooth. Strangely, the FPS depends on the number of torches I encounter. When I didn't encounter many torches I played on high but at one point:
SpoilerShow
beginning of the 3rd level
there were 3 torches in one place and the FPS war totally unbearable on high, barely fine on medium and all right on low (even two torches close to each other are painful). When I tried to lower other settings while preserved high shadows FPS didn't change very much. So my FPS really depends on the number of torches I meet in one place which is quite wierd.
My computer is strong enough to run Oblivion with mods (OOO) at max settings and Skyrim on high (not ultra) flawlessly. I personally think that Skyrim is more shadow-demanding than LoG. However, I now have Ubuntu 11.10 and I run games through Wine but the games I tried worked with the same performance as on Windows (didn't try Oblivion and Skyrim, though).
Here are my specs:
Ubuntu Studio 11.10 & Wine 1.4
CPU 3GHz Dualcore
GPU ATI Radeon HD4800 SE 512MB
RAM 4GB

Did you notice it as well or it's just because of my Linux OS?
Despite the torch thing I'm suprised it runs so well on Wine and I'm really enjoying the game :-).
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stage
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Re: Shadows FPS impact

Post by stage »

Yes, is same problem on Windows. Put 5 torches in one room, cast Light, wear one torch your self and cast poison cloud = prepare for slideshow :mrgreen:
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Crashbanito
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Re: Shadows FPS impact

Post by Crashbanito »

The game relies on dynamic lighting heavily. That can put strain on many cards, especially because of the torches.
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Kubouch
Posts: 14
Joined: Sun Apr 15, 2012 1:38 pm
Location: Czech Republic

Re: Shadows FPS impact

Post by Kubouch »

It looks like the dynamic shadows are the problem. When I'm on low (which leaves only static shadows) the performance is fine while there is not much difference between high and medium. So I'm forced to play on everything maxed and low shadows. This is silly.
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