Proxmox Server Malware Removal & Optimization

My Proxmox server is experiencing slow performance, possibly due to a malware infection. The server primarily runs Linux-based virtual machines. The ideal freelancer for this project should be well-versed in Proxmox, Linux systems, and cybersecurity measures.

Key requirements:
- Diagnose the server's issues
- Remove any malware
- Optimize server performance post-recovery