A DevOps Engineer at XYZ Company is tasked with optimizing the performance of a latency-sensitive microservice and troubleshooting network issues in their Google Cloud Platform environment. The microservice is running on a Kubernetes cluster, and the company is using Cloud Monitoring and Cloud Logging for observability. The microservice is experiencing intermittent network issues, resulting in high latency for API calls. Which of the following approaches should the engineer take to diagnose and address the issue?