[Hummingbird Pro] Google page speed has dropped 20 points since installing hummingbird and smush

Hi there, one of your team has kindly made some changes to the plugin settings and suggested deactivating the other caching plugins i already had setup – now my page speed, which i was trying to improve, has now dropped a further 20 points on both desktop and mobile! I think i will need to uninstall the plugins smush and hummingbird as i need the page to get faster not significantly slower. I have my site hosted on siteground have cloudflare so that has been connected. The plugins for siteground, caching, cloudflare caching and jetpack have all been deactivated