Installing OPcache

Hi all Just looking for ways to improve performance a bit on one of my AWS instances which houses multiple fairly large/busy websites, currently reading an interesting article about the differences between PHP 8.0 and 8.1 and they've done some testing but they had OPcache enabled. Wondering if anyone has enabled OPcache on their servers, what you thought, did it improve any performance issues, is it worth doing? Thanks.