Poor Performance - Rebar

[BrentBurgess1980]

Hi All,

I have a very frustrating situation with Rebar that I am hoping a more seasoned user can help with.

The attached file contains an abutment panel with reinforcement (mostly constrained). 

Revit takes 30 minutes, sometimes longer (the worst case was 2 hour) to either: 

• Move the panels
• Copy the panels
• Edit constraints

and around 5 minutes to make adjustments to the panel parameters

Things I have tried

• Making them assemblies for moving & copying (No effect), it takes just as long to create and disassemble.
• Setting Detail Level to Coarse and Wireframe

The rebar in the panel, and the panel is unpinned. 

This seems like an unreasonable amount of time to process.

Any assistance, solutions, reasons for this would be greatly appreciated.

Thanks,

Brent

System Information
------------------

System Manufacturer: HP
System Model: HP ZBook 15 G4
BIOS: P70 Ver. 01.21 (type: UEFI)
Processor: Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz (8 CPUs), ~2.9GHz
Memory: 32768MB RAM
Available OS Memory: 32688MB RAM
Page File: 17034MB used, 20517MB available

Display Devices
---------------
Card name: NVIDIA Quadro M2200
Manufacturer: NVIDIA
Chip type: Quadro M2200
DAC type: Integrated RAMDAC
Device Type: Full Device (POST)
Device Key: Enum\PCI\VEN_10DE&DEV_1436&SUBSYS_8277103C&REV_A1
Device Status: 0180200A [DN_DRIVER_LOADED|DN_STARTED|DN_DISABLEABLE|DN_NT_ENUMERATOR|DN_NT_DRIVER]
Device Problem Code: No Problem
Driver Problem Code: Unknown
Display Memory: 20397 MB
Dedicated Memory: 4053 MB
Shared Memory: 16343 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)

[MostafaElashmawy]

Make a group of each panel with its rebars.

The group will move very quickly.

[ovidiu_paunescu]

Hi @BrentBurgess1980 

What version of Revit are you using?

[BrentBurgess1980]

Sorry - should have included that - 2020.2.1

[BrentBurgess1980]

I should probably add too.... when I undo (after it does finally move) it moves back instantaneously.

Other things I have found, although not sure should affect it is that there is 1 set of freeform rebar.

[BrentBurgess1980 · Accepted solution]

I think we have resolved the issue after going through the reinforcement individually deleting and testing.

The issue was these bars - we had 2 sets with an alternating lap. Once we deleted one of them, the whole moved in about 5 seconds - about the time I was hoping for.

Still not sure why that made it slow down though, but happy we found the solution.