Hello, Alex,
“since the changes you made” – what exactly?
Please update the theme and Core plugin – https://www.8theme.com/documentation/xstore/theme-installation/theme-update/ https://www.8theme.com/documentation/xstore/plugins/plugins-update/
Then record a video of your actions and the speed on your site, please.
Thank you for your cooperation. We apologize for any inconvenience this may have caused.
Kind Regards,
8theme team