FPS Drops to 20 with Foliage?

Development World Creation
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1

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So I’ve been working with speedtree and I’m making a very very small forest for the level. I’ve tried to use all the basic optimization techniques, each tree is around 2.8k tris, they have 3 LODs and billboard themselves when they get far away.

I’ve switched the shading type to foliage as well. There isn’t even any real props in the scene so im confused why the fps drops so low in such a small scene? The weird thing is is that the drops are totally random. I can sit in the same spot and go from 60fps to 27 over a period of time.

My specs:

Operating System

Windows 10 Pro 64-bit

CPU

Intel Core i7 4770K @ 3.50GHz	55 °C
Haswell 22nm Technology

RAM

16.0GB Single-Channel DDR3 @ 666MHz (9-9-9-24)

Motherboard

MSI Z87-GD65 GAMING (MS-7845) (SOCKET 0)	53 °C

Graphics

BenQ GL2450H (1920x1080@60Hz)
BenQ GL2250H (1920x1080@60Hz)
3071MB NVIDIA GeForce GTX 780 Ti (EVGA)	85 °C

Storage

1863GB TOSHIBA DT01ACA200 (SATA)	37 °C
223GB Crucial_CT240M500SSD1 (SSD)

Optical Drives

ATAPI iHAS124 W

Audio

NVIDIA High Definition Audio
2

i am not the answer but have you tried selecting the trees and making them a “group” to see if this helps fps

Nice Pc by the way

:0)

3

Use foliage tool or procedural fool.

4

Are you using Translucency or Masked material mode? Translucency can be extremely heavy when a lot of instances overlap. And how are your foliage meshes made? In my video I talk about having too much fully transparent space: UE4 Graphics Profiling: Pipeline and Bottlenecks - YouTube The part on Optimization Viewmodes (14:00) can also be useful to you.

Regards,

Oskar