Central model. Really slow almost unusable

[viktorg20]

Problem with the working speed of our central model

Hi.
Our central model in revit 2023 started to act really slow recently and we have not found a way to fix it as of today.

We are students using it for a project. The model is stored on a drive in school and accessed through vpn if working from elsewhere.

Our teacher looked at the problem and was unable to come up with a solution.

Doing most commands in the project takes ages and just drawing in general leads sometimes to Revit not responding.

When accessing the 3d view from the top tab, revit needs to think for good 10 minutes and goes into not responding.

Our teacher says he eliminated that the problem is the drive in general and the vpn. Other groups do not have this problem seems like.

This problem seems to not be connected to the pc specs. As we all have different computers and we are all experiencing it.
We are all using local files and not working

directly in the central model

What we have tried.
- Purged the file from unused families.
- Scanned the file for dwg familes and deleted them
- tried to clear our warnings but the file is to slow to do it.
- turned off shadows in 3d views.
- deleted unused veiws / floor plans
- updating revit to the latest patch.

Will provide more information if asked.
If anyone knows any tricks that might help we will be very thankful.
The project is due in 2 weeks.

• Thank you in advance.

[Tom_Kunsman · Accepted solution]

It is possibile that the model might be corrupt. Working from a VPN connection WILL corrupt a model. Have you tried running an Audit? Running an Audit at least once a twice a week (if not daily) is a good pactice to get into.

I would also recommend the next time the file does open to try and compact it with the synce with central command.

 You all should be working with the central model and creating new local files each day. Working off of the local file with multiple users might also be creating an issue. 

[viktorg20]

thank you, will try to run and audit when i am at home.

we all have seprate local files for each users not sure if that makes a difference.

[hmunsell]

From what it sound like at one time, the file preformed normally. then 2 weeks ago or so it started slowing down? What changed in that time? 

• Did more people get added to the project?
• Did the model suddenly get larger?
• are you using any 3rd party tools in Revit to run calculations?
  • programs like Elume Tools for lighting can really bog down a model if not managed well. 
• etc....

Is it still slow if only one of you is in the model or does it slow down the more of you are in it?

Do you have a lot of Detail or Model Groups in the Model? those can cause issues...

Are you using Design Options? 

• If design options are not being managed well they will cause issues...

what is the Latency your are getting over the VPN?

• We had a big issue with that a few years ago at my office. 
• Working over a VPN is always risky as @Tom_Kunsman mentioned. We have found as long as our latency was in the low teens, but preferably in the single digits, you have a lot less issues.  
• you can usually see the latency if you do a speed test when your logged in over VPN.

Download BIM Interoperability Tools and use the Model Checker to run a "Best Practices" or "Health Check" report on the model.