WordPress Performance Fix

I need help resolving performance issues on my WordPress site caused by a plugin. Here are the details:

- The site is currently experiencing slow loading times and may be unresponsive at times.
- I am unsure which plugin is causing the issue, so I will need assistance in identifying it.

Ideal skills and experience:
- Expertise in WordPress and plugin management
- Strong troubleshooting skills
- Experience with performance optimization

Looking for a freelancer who can quickly diagnose and fix the issue.