A slow wp-admin when WooCommerce is activated can be caused by various factors, and it’s important to diagnose the issue to find the root cause and implement the appropriate solution. Here are some steps you can take to troubleshoot and improve the performance of your WordPress site with WooCommerce:

1. Server Resources: WooCommerce can be resource-intensive, especially if you have a large number of products and customers. Consider checking your server’s resource usage (CPU, RAM, and disk) to ensure it’s not overloaded. Upgrading your hosting plan to one with more resources may help if this is the issue.

2. Caching: Implement a caching solution for your WordPress site. Caching can significantly improve the speed of your website by serving pre-generated static pages instead of processing each request dynamically. Popular caching plugins for WordPress include WP Super Cache and W3 Total Cache.

3. Database Optimization: WooCommerce relies heavily on your WordPress database. Ensure that your database is optimized. You can use plugins like WP-Optimize or WP-Sweep to clean up unnecessary data, such as post revisions, spam comments, and transients.

4. Plugin and Theme Compatibility: Check if the issue is caused by a conflict between WooCommerce and other plugins or your theme. Disable other plugins one by one and switch to a default WordPress theme (like Twenty Twenty-One) to see if the problem persists. If it doesn’t, you may need to identify and resolve compatibility issues.

5. Update Software: Ensure that your WordPress core, WooCommerce, plugins, and themes are all up to date. Outdated software can be a common cause of performance issues and security vulnerabilities.

6. Image Optimization: Large images can slow down your website. Use an image optimization plugin to compress and resize images automatically. Smaller image file sizes can lead to faster page load times.

7. Content Delivery Network (CDN): Implement a CDN to distribute your site’s content to servers located closer to your visitors. This can reduce server load and speed up loading times.

8. Hosting Provider: If you’ve tried all of the above and still experience slow performance, consider switching to a reputable hosting provider that specializes in WordPress and WooCommerce hosting. A managed WordPress hosting service can provide better optimization and support.

9. Server Caching: If your server doesn’t have built-in caching, consider using server-level caching solutions like Varnish or Nginx caching. These can significantly improve server response times.

10. Monitoring: Use monitoring tools like New Relic or Query Monitor to identify slow database queries or other performance bottlenecks. This will help you pinpoint specific issues that need attention.

Remember to take backups of your site before making significant changes, and test each change to ensure it improves performance without causing other issues. Additionally, consider consulting with a developer or a WordPress expert if you’re unsure about any of these steps or need further assistance with your specific situation.