i have now new server,varnish installed, but the response if i want open is to slow..
but i am not sure which one i believe.
Some admins say, we not need fullpage cache, the other one say, not need CDN and AWS, the other one say no we must make cdn and AWS.. and other one say , ubuntu on server and configure the server and configure the database..
Please try disabling the main menu in the block manager and check the speed again. If the problem is there, it can be related to the CS-Cart code and the theme.