Cisco C8200 IOS-XE Expert Needed for Gaming QoS and Network Optimization

I have a Cisco Catalyst C8200-1N-4T running IOS-XE. My internet connection is working correctly and is stable, with no general connectivity problem. However, I need an experienced Cisco engineer to professionally review and configure the router specifically for competitive PS5 gaming. My goal is to achieve the best technically possible gameplay experience through correct traffic handling, low latency and jitter, and properly designed QoS. The connection is a dedicated Active Ethernet point-to-point business fiber service. The Cisco router receives the ISP connection through an 802.1Q VLAN with a private transit /30 and routes a separate public /30 ب the LAN. The service speed is approximately 100/100 Mbps, and the main gaming device is a wired PS5 Pro. The engineer should: * Review the current Cisco configuration. * Determine the best network design for my connection. * Configure and optimize the C8200 for competitive gaming. * Review upload and download traffic behavior. * Correctly configure shaping, hierarchical QoS, LLQ, queue limits, NAT/PAT, or other features only where technically appropriate. * Check QFP drops, interface errors, latency, jitter, bufferbloat, MTU, and queue behavior. * Create a complete backup and rollback plan before making changes. * Perform before-and-after testing. * Provide the final configuration and explain all important changes. I am not looking for a generic copied gaming QoS configuration. I need someone with genuine hands-on experience in Cisco Catalyst 8000 Series, IOS-XE, QFP, hierarchical QoS, LLQ, shaping, subinterfaces, routed public subnets, and NAT/PAT. CCNP Enterprise or CCIE Enterprise Infrastructure is strongly preferred. When applying, please answer: 1. Have you worked directly with Cisco C8200 or another Catalyst 8000 router? 2. Have you designed QoS for latency-sensitive real-time traffic? 3. What diagnostics would you perform before changing the configuration? 4. Can you provide verifiable CCNP or CCIE certification details? 5. Can you work through a supervised remote session and provide a backup, rollback plan, test results, and documented final configuration? The internet connection already works correctly. This project is specifically for professional Cisco configuration and optimization to obtain the best possible competitive gaming performance.