Same here, generally 10-40% better performance, depending on workload, at 15%+ lower costs, on AWS.

We have seen performance improvements in PHP, Java, and various CPU-bound tasks such as video transcoding.

This goes for either EC2 m7g vs m6i and also for Fargate x64 (from my experience, perfomance seems comparable to m5 instances) vs ARM (Graviton2).