My website has been running very slow so did a P3 test and found that BUddyPress and bbPress were using the most load time so de-aactivated both. After de-activation I found that there was no longer any way for users to register as the register page was no longer functional. So I re-activated BuddyPress only to reinstall the register page. (I do have wp-signup.php in my file manager in cPanel) I am running MultiSite with Prosite.
I recently got in touch with my hosting providers to inform them of my site running slow. They suggested I upgrade to VPS?
Thoughts/ideas on the CPU 100% and what it all means please before I get back in touch with the hosting providers?