Try using Twenty Fifteen and disabling all plugins. It’s either a plugin or your theme that’s slowing things down. Once you find the culprit you can try opening a support ticket with the theme or plugin author.
I’m using kleo theme. When i uninstall all plugins, i have my site running at it full speed. Very fast.but once i activate buddypress, the request or the site becomes slow just for logged in users. I dont understand.
When i say the site beces slow it is especially for thz buddypress part. I Can’t publish easily a picture or even like. It takes tremendous time.
Try getting the latest version of Kleo theme from themeforest.net. I’m pretty sure this is a theme issue, as BuddyPress itself is quite good in most places performance-wise.
As a general suggestion – activate object caching (memcached or redis) – you will need to talk to your host if you are on a shared/managed hosting, or install everything by yourself if on VPS/VDS/own server. Object caching will greatly help, believe me or not.
I use the Cometcache plugin, the paid version it has a great feature called loggedin user caching.It creates a user specific cache for each user that is logged in and refreshes the cache when a user has an interaction with the site like posting an update or making a friend request. .The downside is the cache can grow quite big if you have a lot of users but you can choose to clear the cache when they log out. https://cometcache.com/features/
