topic Re: ArcGIS Pro extremely slow in ArcGIS Pro Questions

ArcGIS Pro extremely slow

PouranBehnia — Wed, 04 Jun 2025 16:49:50 GMT

Hello,

I am using ArcGIS Pro 3.5.1. Recently the software has become extremely slow — even right-clicking on a layer can take up to 10 minutes to respond.

I’ve already uninstalled and reinstalled the program, but the issue persists. Although my data are usually stored on an external drive, I copied one of the projects to my C drive to rule out that factor, but it didn’t resolve the problem either.

I’m wondering if there could be another underlying issue that I’m not aware of. I would really appreciate any help you can provide to troubleshoot and resolve this problem.

Thank you,
Pouran Behnia

Re: ArcGIS Pro extremely slow

Robert_LeClair — Wed, 04 Jun 2025 16:59:29 GMT

There are a couple things to try:
How To: Perform an ArcGIS pro Soft Reset
Troubleshooting Performance Issues in ArcGIS Pro

I would try the soft reset first, then explore the 2nd document authored by Kory Kramer.

Re: ArcGIS Pro extremely slow

PouranBehnia — Wed, 04 Jun 2025 17:20:01 GMT

Thanks, I will try.

Re: ArcGIS Pro extremely slow

PouranBehnia — Wed, 04 Jun 2025 17:53:19 GMT

When uninstalling ArcGIS Pro, I deleted Esri folder from the Roaming and Local folders and reinstalled ArcGIS Pro. So Do I need to perform the soft reset?

In the "C:\Users\Username\AppData\Local\ESRI" I don't have the " ArcGISPro.exe_StrongName" folder.

Re: ArcGIS Pro extremely slow

Robert_LeClair — Wed, 04 Jun 2025 17:56:42 GMT

I would test the newly installed ArcGIS Pro application and test to see if you're seeing poor performance. If not, then no, you do not need to perform a soft reset. My guess is uninstalling and reinstalling ArcGIS Pro deleted the ...*StrongName" folder.

Re: ArcGIS Pro extremely slow

PouranBehnia — Wed, 04 Jun 2025 18:01:03 GMT

Yes, I reinstalled two weeks ago and the performance is very poor.

Re: ArcGIS Pro extremely slow

DanPatterson — Wed, 04 Jun 2025 19:06:22 GMT

perhaps a clean reinstall

Performing a clean uninstall of ArcGIS Pro | Esri Australia Technical Blog

How To: Perform a Clean Uninstall and Reinstall of ArcGIS Pro

Re: ArcGIS Pro extremely slow

Robert_LeClair — Wed, 04 Jun 2025 19:08:58 GMT

As Dan mentioned below, then a clean uninstall and a clean reinstall may be best vs. a soft reset of ArcGIS Pro. I did this workflow when I recently upgraded to ArcGIS Pro 3.5 and have had zero performance issues with the software.

Re: ArcGIS Pro extremely slow

PouranBehnia — Thu, 05 Jun 2025 19:20:57 GMT

A clean uninstall and reinstall didn’t solve the problem. It seems the issue is related to the external drive. I copied all the data to the C drive of my desktop computer, created a new project, and ensured it reads all the data from there, with no layers referencing the external drive. It appears to be working fine. However, the external drive functions without any issues when connected to my laptop.

Re: ArcGIS Pro extremely slow

Robert_LeClair — Thu, 05 Jun 2025 19:30:12 GMT

Ah I see. So external disk drives are great for storage but very poor for any ArcGIS Pro operations such as geoprocessing tools, display, etc. Best practice is to have your data locally on your PC and/or a fast network share/drive. Problem: ArcGIS pro and Cloud Storage Services

Re: ArcGIS Pro extremely slow

PouranBehnia — Thu, 05 Jun 2025 20:04:11 GMT

Thanks for your help and comments.

Re: ArcGIS Pro extremely slow

FundaçãoAroeira — Wed, 20 Aug 2025 19:14:20 GMT

Hi, I’m experiencing very slow performance in ArcGIS Pro, even though I’m using a high-performance computer and all the data is stored locally. What could be causing this issue?

Re: ArcGIS Pro extremely slow

Robert_LeClair — Wed, 20 Aug 2025 21:54:28 GMT

Have you run any of the items from this Esri Community post - Troubleshooting Performance Issues in ArcGIS Pro - to troubleshoot the performance issues? Please advise.

Re: ArcGIS Pro extremely slow

PouranBehnia — Thu, 21 Aug 2025 13:24:44 GMT

No, I didn't run that. The problem was with the external drive. I changed the drive and ArcGIS Pro works well now.