best os for performance and stability ?

Hi,
i am using centos for more than 10 years but right now i have a server that hang too much i check everything and all hardware is fine the only thing i can find is that os have problem because that server has much traffic and usage so i am searchning for a best linux distro for performance and stability and security i see in benchmark in first stage is Ubuntu then centos then debian so can you guide me which one of them is best for performance and stability on high load ?
i wanted go with…

best os for performance and stability ?