Ecommerce Product Page using Vue

What are you most proud of, and what would you do differently next time?

❤Things I've tried

• Created Single Page Application (SPA) with Vue
• Product Details Page with Data Binding
• Shopping cart: Created a function that only adds quantity when overlapping items are contained
• Used Boostrap to design layout and implement functionality
• Scored 92% on mobile, 80% on desktop Google PageSpeed Insights
• Considered web accessibility
• Responsive for Mobile, Tablet, Desktop devices

What specific areas of your project would you like help with?

💪Things I should improve

• When I click on New Arrival's list of other products, the thumbnail changes slowly in the desktop layout with delays.
• Is it because of the size of the image capacity? Google PageSpeed Insights also said image-related resources indicate a problem.
• But I have no idea how to solve it 😢

Please let me know if there are any areas of improvement! Thanks :D