Hello!
I tested your website performance: https://gtmetrix.com/reports/www.slowlivingbrand.com/Pgm3ZuGE/
It is slow even the Xstore core plugin is disabled. I see some of the third party plugins is causing the slow loading of the website. Please check the waterfall tab in the above link and you will see the resources taking the time.
I also see you need to optimize your images and you have not used any cache plugin which is necessary to control the resources loading and caching.
We have a detailed article on how to speed up a website using a cache plugin an image optimizer, Can you please follow it as it will be surely very helpful:
https://xstore.helpscoutdocs.com/article/100-how-to-speed-up-my-website
Please configure the cache plugin, optimize the images and activate the Xstore core plugin, you will see the performance much better.
Please let me know if you need any help, we would love to help you with any issue you facing.
Thank you!