Texture Painting is slow / lags with large brush size #60965

New Issue

Steve Warner · 2019-01-29T01:17:31+01:00

Steve Warner commented

2019-01-29 01:17:31 +01:00

System Information
Operating system: Windows 10
Graphics card: GeForce 1080

Blender Version
Broken: 2.80 690478027b

Worked: (optional)
2.79b with Window Draw Method set to Overlap Flip

Short description of error

Texture painting in the 3D viewport is laggy in 2.8, especially with a medium to large brush size. The smaller the brush size, the better the performance. Painting in the UV viewport has no lag.

In 2.79, changing the Window Draw Method to Overlap Flip fixed this problem. I have been unable to find the Window Draw Method settings in the 2.8 prefs.

You can test this on the attached object. Just create a new image and try painting on it in the 3D viewport. With a GeForce 1080 on Windows 10 with 32GB of RAM and a 3.6GHZ Xenon processor, I get extremely laggy performance.

branch.blend

**System Information** Operating system: Windows 10 Graphics card: GeForce 1080 **Blender Version** Broken: 2.80 690478027bd7 Worked: (optional) 2.79b with Window Draw Method set to Overlap Flip **Short description of error** Texture painting in the 3D viewport is laggy in 2.8, especially with a medium to large brush size. The smaller the brush size, the better the performance. Painting in the UV viewport has no lag. In 2.79, changing the Window Draw Method to Overlap Flip fixed this problem. I have been unable to find the Window Draw Method settings in the 2.8 prefs. You can test this on the attached object. Just create a new image and try painting on it in the 3D viewport. With a GeForce 1080 on Windows 10 with 32GB of RAM and a 3.6GHZ Xenon processor, I get extremely laggy performance. [branch.blend](https://archive.blender.org/developer/F6437443/branch.blend)

Steve Warner commented

2019-01-29 01:17:31 +01:00

Added subscriber: @stevewarner

Brecht Van Lommel commented

2019-01-29 03:58:48 +01:00

Closed as duplicate of #58465

Brecht Van Lommel closed this issue

2019-01-29 03:58:48 +01:00

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Texture Painting is slow / lags with large brush size #60965