Foliage Instance Low FPS
I'm running the new 4.7.2 engine and I'm having issue with my FPS and foliage instancing.
The grass has two different meshes, A and B. Both instanced at around 80 each. Each grass clump is about 500tri-400tri.
When running full screen, 1080p, I'm hitting as low as 11fps. I've set the static mesh settings to foliage instancing, but other then that, I've no idea how to fix this issue.
asked Mar 15 '15 at 03:46 PM in Rendering
Are you using the new two-sided foliage lighting model for your material? If not, I'd try that, and see if your performance increases. Also, try disabling the dynamic shadows for foliage, as depending on how many instances you have and your current PC specs, you might be generating hundreds of thousands of shadows.
In addition to that, use culling distances to fade out your foliage actors over large distances, and LOD's for your grass material. 500 tris x 100k meshes can add up, and if you can simplify or billboard those meshes to 5-20 tris, you'll experience much greater performance.
answered Mar 15 '15 at 09:28 PM
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