100% CPU usage on Siteground

Hi,

Since upgrading to Jetpack paid version, we are experiencing CPU spikes a couple of times a day, which causes our site to drop for around half an hour each time.

We take orders through our site and are likely losing customers due to the outage.

I’m struggling to see what’s causing the problem, siteground tell me it’s likely a plugin, but the only thing that has changed recently is Jetpack