[Blender] The FPS was very slow so I improved it.

Problem

• As you can see in the image above, the FPS when playing the animation is only around 3.83.
  • No, it’s really slow in operation and rendering. .
• So, I did some trial and error to increase the FPS in the view while maintaining the quality as much as possible.

So, this article shows what I have tried to increase the FPS during animation playback using only Blender settings.

Operating Environment

OS	Windows10 Pro 1909
Software	Blender 2.81~2.83, 2.90
CPU	i9-9960X
GPU	RTX2080Ti SLI x2
Memory	64GB

File information used

Vertex	1,583,752
Face	1,583,143
Triangular Surface	2,197,210
Object	0/606
Memory	1.79GiB
File size	685 MB (718,532,656 bytes)
Size on disk	685 MB (718,536,704 byte)

Others

• Number of models to animate/Number of collections: 7/42
• Settings related to rendering/drawing

This is the standard value for this verification.This is the value when creating a new Blender. Please enlarge the image for detailed values.

Render properties part 1	Render properties part 2
Cycles GPU calculation Other defaults 1	Cycles GPU calculation Other defaults 2

Output properties	View layer properties
Default	Default

• Preferences – System

Select CUDA to use Grabo. Otherwise leave the defaults.

Things I tried to improve FPS

It can also be said to be a way to make Blender lighter.

Purpose of FPS improvement

We verified how much FPS could be improved with this file information (large file size) used.

• Effective in reducing file size
• Change frame rate settings in output properties
• Render properties – reduce bounces
• Render properties – reduce sampling
• View layer properties – use denoised data
• Render Properties – Simplify Effect

Effective in reducing file size

• Of course, this is the quickest way.
• It is better to delete unnecessary scene objects.

It’s 30FPS.

Change frame rate settings in output properties

It’s in the output properties> frame rate.

• If you set FPS to 1, you will only get about 1.
• Set this as high as possible if you want the model’s animation to be smooth. (Set high: at least 23.98 FPS in the Blender FPS column)
• For gaming purposes, 30FPS or 60FPS is suitable.

Render properties – reduce bounces

* Render engine> Cycles only.

レンダープロパティ > ライトパス > 最大バウンス数

Total	12	1
Diffuse	4	1
Brightness	4	1
Transparent	8	1
Transmission	12	1
Volume	0	0

There is almost no change. FPS 3.52~4.01 (visual)

Render properties – reduce sampling

レンダープロパティ > サンプリング

Render	128	1
Viewport	32	1

There is almost no change. FPS 3.58~4.13 (visual)

View layer properties – use denoised data

• パス > データ > デノイズデータ Check ☑.
• パス > ライト > ディフーズ Check ☑.

Diffuse	inspection lighting Indirect lighting
Brightness	Inspection lighting Indirect lighting
Transmission	Inspection lighting Indirect lighting
Subsurface	Inspection lighting Indirect lighting

On the contrary, FPS decreased only slightly, 3.05~3.99 (visual)

I used this site as a reference.

dskjal.com

Render Properties – Simplify Effect

レンダープロパティ > 簡略化 Just add a check mark.

FPS up 6.95~8.07 (Visual)

Other things I tried

• Hide objects
  • There is no particular change.
• 3D shading view switching
  • Wire frame
  • 3D shading solid mode
  • 3D shading material preview mode
  • Render preview

Just by switching to 3D shading solid mode compared to wireframe, FPS improved slightly.

• Configure the program in the NVIDIA control panel
  • Blender.exeを選択し、設定はいじらずに適応し、PCを再起動します。(参考[2])

There is no particular change.

• If you don’t understand why, reset the settings to their initial state.
  1. Restoring render properties, output properties, and view render properties to default

I think it would be a good idea to reset all settings once and check them one by one.

Lastly

• The most effective thing was to check Render Properties – Simplify.
• The next step is to reduce the file size.
• As a final result, FPS went from 3.83 to 11.
• Since the file size is originally large, I learned that it is not a good idea to resist it just by setting it.
  • If you are a beginner, don’t change the settings too much.
• On the other hand, with Maya, I was able to play the animation at a comfortable 30FPS even if the file size exceeded 500MB without any special settings.

Reference

[1] Summary of ways to reduce rendering time in Blender

[2] Measures to prevent Blender from slowing down | Cyber ​​Note

[3] animation – Low FPS on animation playback

Model used: © Niconi Solid-chan