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Maniphest T75385

Stopping a render in Eevee takes a long time.
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Description

System Information
Windows 10 Pro
Graphics card: NVIDIA 1050 Ti
Dell Laptop

Blender Version
Blender 2.81

Short description of error
When Eevee is rendering, it doesn't like to be canceled. It often takes a while to stop rendering after ESC has been hit or the cancel render X has been pressed. I realize I don't have the largest GPU in the world, but I never experienced this with Cycles. No hate to Eevee, as it's amazing, but this is a weird delay. I'm guessing its because Eevee takes so much of the GPU resources, Blender can barley run its GUI, or that's what it feels like when a render is going.

Exact steps for others to reproduce the error
I often render animations with Eevee, and it happens with every render.

Related Objects

Event Timeline

Fred Sprinkle (fsprinkle) created this task.Apr 4 2020, 6:39 PM
Anthony Edlin (krash) added a subscriber: Anthony Edlin (krash).Apr 4 2020, 9:34 PM

Hi, thanks for report.

It does seem that if you hit cancel, or indeed try to do anything in blender, while Eevee is rendering a frame it will not cancel/respond until the frame is done. If each frame takes a min or so it will take that long before you will get a response. I'm sure it's because rendering in Eevee is tied to the GPU.

It seems to be a known issue, see: T72339: Momentary interface freezes while EEVEE rendering causes progress bar malfunction

Would mark as duplicate but can't, someone else will have to.

Ankit Meel (ankitm) closed this task as a duplicate of T72339: Momentary interface freezes while EEVEE rendering causes progress bar malfunction.Apr 5 2020, 1:28 PM