AWS-Linux is so slow because of old packages that the new OS is guaranteed to be faster. It has a recent kernel & containerd. Podman would have made it even faster.
At my previous company we discarded the AWS-Linux distro and used rancherOS for container hosting because the version of yum they used was too flaky. They were unwilling to move to DNF to try and fix it. We've long badgered them for something like this (rancher style AWS-Linux dsitro) and they seem to have finally listened. Too bad, I moved to a different company and a different role to benefit from this. At least my old colleagues will be happy