Maniphest T76867

Viewport frame rate does not working as expected!
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Assigned To
Richard Antalik (ISS)
Authored By
Ivaylo Gogov (ivaydesign)
May 18 2020, 9:14 PM
Tags
  • BF Blender
Subscribers
Brecht Van Lommel (brecht)
Christopher_Anderssarian
Ivaylo Gogov (ivaydesign)
Richard Antalik (ISS)

Description

System Information
Operating system: Windows-10-10.0.16299-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.75

Blender Version
Broken: version: 2.90 (sub 2), branch: master, commit date: 2020-05-18 09:05, hash: rBf3edff2d7d60
Worked: (newest version of Blender that worked as expected)

Short description of error
Viewport frame rate time of the default cube scene cannot play above 30 fps. Is not working as expected, when I try to move the fps value in the property to 60, the viewport showing only up to 30. This is not the same on my desktop machine. The Laptop Graphic Card is Nvidia 1070, in my assumption this should not happen from a default cube scene.

playback_problem_default.blend630 KBDownload

Exact steps for others to reproduce the error
Opening default scene of Blender 2.9, 2.83, 2.82, 2.80 / Pressing the playback icon, changing the property from default 24 fps to 60 fps. Viewport is showing only 30.
Could you please, provide solution to that.

Related Objects

Event Timeline

Ivaylo Gogov (ivaydesign) created this task.May 18 2020, 9:14 PM
Christopher_Anderssarian added a subscriber: Christopher_Anderssarian.May 18 2020, 9:16 PM

Do you have vsync on?
What's the frame rate in fullscreen?

Ivaylo Gogov (ivaydesign) added a comment.May 19 2020, 1:09 AM

Hello Christopher,
Yes sync is on, I've tied both On/Off it is the same.
Just to confirm in full screen no change. Same result.

Christopher_Anderssarian added a comment.May 19 2020, 2:19 PM

It's very suspect that it's half (assuming 60Hz) of your monitor's refresh rate.
What about Window --> Toggle Window Fullscreen?

Richard Antalik (ISS) added a subscriber: Richard Antalik (ISS).May 19 2020, 2:53 PM

Just for reference: T60336: UI refresh rate - Bug or feature?

Brecht Van Lommel (brecht) added a subscriber: Brecht Van Lommel (brecht).EditedMay 19 2020, 8:27 PM

If Blender is unable to play animation at less than 60 FPS, then it is expected that it will jump to 30 FPS instead, because of V-Sync.

I don't think V-Sync is really turned off if it's still playing at exactly 30 FPS unless it's a coincidence that this happens to be the fastest playback possible.

What would be good to check also is what happens when setting a Custom framerate to 120 FPS.

Other software being open at the same time can also have an impact, especially when not running fullscreen (which is not the same as maximized).

Ivaylo Gogov (ivaydesign) added a comment.EditedMay 21 2020, 1:43 PM

Hello Brecht, and Christopher
Thank you both for the feedback. I fix the issue based on your feedback!

The issue was appearing from the Graphic Card. In the Contol Panel, I switched Vertical Sync property --> from "Use 3D application settings" --> to OFF state, and now there is no issue! Thank you very much!

Richard Antalik (ISS) closed this task as Archived.May 21 2020, 3:57 PM
Richard Antalik (ISS) claimed this task.

Thanks for update.