Welcome to the Shopify Community!
This is Ahmed Alam a professional Shopify Developer from Techmaa. As I'm sure you well know, page speed has become a factor for ranking in search engines. That's why if you're investing lots of time and money into getting the rankings you deserve, you shouldn't be blowing it by having a slow website.
Longer load times have also been shown to negatively affect conversions.
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Thanks and Best Regards.
@PowerUpPets here are a few things you can do to improve your performance:
1) Your email popup loaded immediately, during page load. Set your email popup to load on delay, rather than immediately (this will also prevent penalization from Google for having an instant popup).
2) Compress your images so that they are lighter in weight (but still maintain the same resolution). Here are warnings I found about images not compressed: https://analyze.speedboostr.com/result/fx05keaipi/rule/imageOptimization (and here is the link to the full analysis of your store: https://analyze.speedboostr.com/result/fx05keaipi).
Here's how to compress images: https://speedboostr.com/how-to-compress-images-on-shopify.
3) If you want to prevent the video from contributing to the initial page load, you can "lazy load" it so the video loads when the user scrolls down the page. Here's a guide on lazy loading: https://speedboostr.com/shopify-lazy-loading. You can use the tactics explained there to lazy load the video. If you're not familiar with code, your developer can handle that.
If you prefer to hand this project off to professional Shopify optimization developers, feel free to reach out to my team at speedboostr.com/contact. We've optimized over 1,000 Shopify sites, and built the first Shopify performance analysis tool (that I linked above).
If you're handling in house, this is a good thorough guide to have your team go through: https://speedboostr.com/shopify-optimization.
@PowerUpPets sounds good. Our team can take a look and give you advice based on our developers' experience optimizing Shopify sites.
there are many things that can be improved to speed up your site as explained by the other members.
However I think the video is of the most "killing" speed features on homepage, you need to hire a developer to either lazyload it ot use a poster on the video, this way the video will only load on click, the best example is the plak theme video feature