sometime website get stuck on proceed to checkout and Add to cart in magento 184.108.40.206
I am having issue on my website after updating magento version 220.127.116.11 from 18.104.22.168. sometime proceed to checkoutand add to cartoption does not work. and my admin is also running slow. When I Select NO - Enable Form Key Validation On Checkout. Everything works perfectly. I do not know what is the issue related to form key validation. can anyone help me to resolve this issue.