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Long response time on objects at collection or object view disabling or entering edit mode
Closed, InvalidPublic


System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87
Intel Core i7-5820K 3.3Ghz

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: rB375c7dc4caf4
Worked: (optional)

Short description of error
[On my file i have two object. One is created from particle system and metaballs - converted to mesh (~99K). Object have Subdiv. modifier. When i press Tab to edit, blender seams freeze for about 15-20 s. after this i could edit model. Same when i want exit edit mode. When i apply subdiv modifier everything work correctly. Another cases is when i want unhide collection or object with this model (by pressing disable in view icon) or switching on/off subdivsion modifier blender need this 15-20 s. to complete action.

In scene i put another object. This is a model of the cap also with subdivision. Entering edit mode work good but unhiding collection or object (by pressing disable in view icon) work with same problems like first one.

I test this scene in 2.82, 2.81, 2.80 and have same result. I haven't this problem (entering edit mode) on version 2.79.

Another problem i have with object-1 is when i export him using obj format i couldn't import correctly to 2.79 version. Format fbx let me import this model to older version.
Maybe it's another bug but could be somehow connected.

Thanks for Your great work

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]

Event Timeline

Himanshi Kalra (calra) changed the task status from Needs Triage to Needs Information from User.May 16 2020, 7:18 PM

@Grzegorz Radomski (rad-sky) Could you fill in the exact steps on how to reproduce the error, they are vaguely there in the description still more precise ones, in bullet format, like step1,- Do this, step 2 -Go there, Step 3 and so on? It would make fixing the bug easier.

Thanks !

Exact steps for others to reproduce the error

Case 1 (long time entering edit mode)

  1. select Mball.001 object
  2. press Tab to enter edit mode
  3. press Tab to exit edit mode

Case 2 (long time hiding object by pressing disable in viewport icon > Outliner)

  1. press disable in viewport icon on object Mball.001 or on cap object

(pressing eye icon to hide/unhide works normally)

another symptom scene with those objects loading longer when opening file.

Ankit (ankitm) closed this task as Invalid.EditedMay 17 2020, 11:34 AM
Ankit (ankitm) claimed this task.
Ankit (ankitm) added a subscriber: Ankit (ankitm).

In case 1, when the drop happened, I had pressed tab. so a lot of memory was freed, and then refilled.
You may follow the discussion at T74186: Proposal for fast high poly mesh editing.
Thanks for the report, but performance issues are not considered as bug on the tracker.
Simpler geometry, shading etc can be used to avoid lag.