You asked: Why is Revit running so slow?

Causes: Working in a Revit model involves interacting with many systems, and if any one (or more) of those systems has slow performance, the entire experience in Revit can be slowed down. … The operating system (OS updates can influence Revit performance). The system hardware (including CPU, Graphics Card, RAM etc.).

How do I make Revit run faster?

Ten Best Practices for Better Revit Performance

1. Use elevation and section far clip. …
2. Minimize DWG imports. …
3. Don’t explode CAD drawings into families. …
4. Remove unused options and views. …
5. Eliminate unused families. …
6. Use model lines sparingly. …
7. Use room separation lines. …
8. Worksets.

Why is Revit 2021 so slow?

A slow startup of Revit can have various causes, such as:



ini Recent Files list that may have moved to a different location. Loading of certain addins for Revit takes longer than expected. Revit needs an update. Single Sign on component needs to be updated.

How much RAM do I need for Revit?

As a general rule, Revit requires 20 times the RAM of the loaded Revit (RVT) project file. So a 200MB RVT file requires approximately 4GB1 of RAM to open. Add to this the RAM needed to run the operating system and to keep other applications like a web browser open.

How do I optimize a Revit model?

Minimize unnecessary geometry, views, and elements when designing your model. Use linked or imported files sparingly when you design your model. Configure project views to optimize revit performance. Use worksets to work on smaller sections of the project model.

Do groups slow down Revit?

Regarding your issue, groups are really not advisable when doing large projects especially when you have a lot of elements in it. Like what you said, it slows down your project. What I would suggest is, you can use link instead of group. To do this, you can convert your groups to link.

What to do if Revit is not responding?

To resolve this issue, perform the following strategies:

1. Disable any third party add-ins and retest: How to disable add-ins for Revit.
2. Turn Worksharing Frequency to manual in Revit options.

Is i5 good for Revit?

Students will be okay with pretty much any Intel Core i5 or any CPU above 3GHz. Rendering has always been a multi-core dependent task in virtually any software out there. … If you are a student opt for Intel Core i5 8th gen (U series) or Core i7 7th gen HQ (quad core) processors.

Is AMD or Intel better for Revit?

Results & Analysis. On the Update File test, we can see that the new AMD processors perform very well – coming in around 10% faster than Intel’s models. Model Creation is an aggregate of several short tests related to creating and modifying various aspects of a project within Revit.

What does compacting a Revit model do?

Compact File.



During a normal save, Revit only writes new and changed elements to the existing files. … The compacting process rewrites the entire file and removes obsolete parts to save space. Because it takes more time than a normal save, use the compact option when the workflow can be interrupted.

How do I allocate more RAM to Revit?

Click the Start button, right-click Computer, and then click Properties. In the left pane, click Advanced system settings. On the Advanced tab, under Performance, click Settings… Click the Advanced tab, and then, under Virtual memory, click Change…

How does Revit accelerator work?

What does Revit Personal Accelerator do and how does it work? … When a user goes to sync, Revit requests the current version from RCW, compares that with the version in PAC, and uses the PAC data to tie the content into the local central, weaving the data streams into the file as needed.