Hi,
When i click on Edit or delete for Configurable Products in Backend i am getting error like
GateWay Time out Error
Website also loading slowly
For reference please find the attached image.
Hello @sekhar_n
Try following this methods
https://bobcares.com/blog/magento-504-gateway-timeout/
If still not works, contact hosting provider, if they can't help, i would suggest to change the server to nexcess or any other magento compatible servers and check your website once their.