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How do I improve performance and shadow quality?

Hello all,

As you can see I have a lot of lighting errors and a lot of shadow issues going on and I do not know how to fix them... also my FPS is unplayable.

Any suggestions how I can resolve these issues?

(Trees are from the open world demo)

Thanks :)

Product Version: UE 4.16
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asked Jul 05 '17 at 12:18 AM in Rendering

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Tommow
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avatar image Baer Jul 05 '17 at 04:46 AM

It appears to me that you're just building everything and thinking Unreal will run everything perfectly. With foliage, the calculations can get extremely heavy especially if its dynamic. And the speed of your own machine will bottleneck what you can process at any one time.

To start, you might want to fix those lightmap issues. It's telling you in the error how to fix them. How large are your textures?

Also fix the overlapping UVs. Use 1% or 2% spacing when laying them out.

As to performance how are you optimizing your scene? Are you using LODs for the trees? Do you have them distance occluded or are you using occlusion volumes? Those are a lot of leaves and they require a lot of calculations. Are they individual leaves or are you using sheets?

You might want to check these links for information on how to optimize your scenes.

Performance and Profiling https://docs.unrealengine.com/latest/INT/Engine/Performance/

How to Optimize a Game https://forums.unrealengine.com/showthread.php?54910-how-to-optimize-a-game

UE4 - How to Improve Performance https://youtu.be/t07lZseid8g

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