Selecting bones on linked rig has lag #101218

New Issue

Juan Pablo Bouza · 2022-09-20T14:42:02+02:00

Juan Pablo Bouza commented

2022-09-20 14:42:02 +02:00

Blender Version
Broken: version: 3.4.0 Alpha, branch: Unknown, commit date: Unknown Unknown, hash: rBUnknown
Worked: (newest version of Blender that worked as expected)

Short description of error
Alright, so I had a chat with Bastien and we agreed to make a bug report so that this had a record.

So in the zip you will find the files "character" and "link". The "link" file has the rig already linked. This is the new BlenRig 6 Rig and ever since we got library overrides people have been experiencing a certain lag when selecting bones on a linked rig.

This lag can go from milliseconds to a couple of seconds depending on scene load and CPU.

Bastien Suggested that disabling Global Undo could fix the lag and indeed it does fix it... but you know, it's not practical to be forced to working without Undo...

In the zip you will also find two files called "no_overrides", there I turned off library overrides for all properties. Unfortunately, the lag is still there when you link the rig.

I really don't know what could be causing this, animation playback works just fine, the lag happens when selecting bones and when scrubbing through the timeline. Maybe you could do some debugging and see what blender is doing on those two operations and why it's taking so long to perform them.

Exact steps for others to reproduce the error

Unzip the attached file - you will find the files "character" and "link"
Open the file link.blend
Select some bones to check the performance
Go to {nav Blender Preferences > System} and disable Global Undo
Select some bones to check the performance
lib_overrides_lag.zip

**Blender Version** Broken: version: 3.4.0 Alpha, branch: Unknown, commit date: Unknown Unknown, hash: `rBUnknown` Worked: (newest version of Blender that worked as expected) **Short description of error** Alright, so I had a chat with Bastien and we agreed to make a bug report so that this had a record. So in the zip you will find the files "character" and "link". The "link" file has the rig already linked. This is the new [BlenRig 6 ](https://blenderartists.org/t/blenrig-6-release/660103) Rig and ever since we got library overrides people have been experiencing a certain lag when selecting bones on a linked rig. This lag can go from milliseconds to a couple of seconds depending on scene load and CPU. Bastien Suggested that disabling Global Undo could fix the lag and indeed it does fix it... but you know, it's not practical to be forced to working without Undo... In the zip you will also find two files called "no_overrides", there I turned off library overrides for all properties. Unfortunately, the lag is still there when you link the rig. I really don't know what could be causing this, animation playback works just fine, the lag happens when selecting bones and when scrubbing through the timeline. Maybe you could do some debugging and see what blender is doing on those two operations and why it's taking so long to perform them. **Exact steps for others to reproduce the error** - Unzip the attached file - you will find the files "character" and "link" - Open the file `link.blend` - Select some bones to check the performance - Go to {nav Blender Preferences > System} and disable `Global Undo` - Select some bones to check the performance [lib_overrides_lag.zip](https://archive.blender.org/developer/F13528517/lib_overrides_lag.zip)

👍 1

Juan Pablo Bouza commented

2022-09-20 14:42:02 +02:00

Added subscriber: @jpbouza-4

Bastien Montagne was assigned by Juan Pablo Bouza

2022-09-20 14:43:41 +02:00

Juan Pablo Bouza commented

2022-09-20 14:44:00 +02:00

Added subscriber: @dr.sybren

Germano Cavalcante commented

2022-09-20 21:53:19 +02:00

Added subscribers: @mont29, @mano-wii

Germano Cavalcante commented

2022-09-20 21:53:19 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Germano Cavalcante commented

2022-09-20 21:53:19 +02:00

Thanks for the report, I can confirm the lag.

As a suggestion for future reports, please make sure to follow our submission template and guidelines, also read these tips about bug reports, to make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, small and simple .blend and/or other files to do so if needed, etc.

Thanks for the report, I can confirm the lag. As a suggestion for future reports, please make sure to follow our [submission template and guidelines](https:*developer.blender.org/maniphest/task/edit/form/1/), also read [these tips about bug reports]( https:*wiki.blender.org/wiki/Process/Bug_Reports), to make a complete, valid bug report, with required info, precise description of the issue, precise steps to reproduce it, small and simple .blend and/or other files to do so if needed, etc.

Bastien Montagne commented

2022-10-06 12:53:18 +02:00

This rig has about 2.5k bones, 1k drivers... This is just a giant amount of data to compare. On my machine, override diffing is around 200ms.

Thing is, override diffing is only performed as part of undo steps to ensure proper feedback for user in the UI (so that edited override property get proper color there).

Ideal solution would be to process these diffing in a completely async process, in some kind of jobs, but this has a lot of technical challenges.

band-aid solution would be to have an option to disable this override diffing on undo step storage, but that's fairly not satisfying.

This rig has about 2.5k bones, 1k drivers... This is just a giant amount of data to compare. On my machine, override diffing is around 200ms. Thing is, override diffing is only performed as part of undo steps to ensure proper feedback for user in the UI (so that edited override property get proper color there). Ideal solution would be to process these diffing in a completely async process, in some kind of jobs, but this has a lot of technical challenges. band-aid solution would be to have an option to disable this override diffing on undo step storage, but that's fairly not satisfying.

Bastien Montagne added this to the Core project 2023-02-07 14:18:22 +01:00

Philipp Oeser removed the

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Selecting bones on linked rig has lag #101218