Search function freezing on website

Job ID: 36315973

Budget: £10 – £50 GBP

On my website, https://thepriceinsats.com/ if you go to the section titled "Sats Shopping List" and search for items, e.g. Pizza, Cheese, Wine, Beef, Crisps.

After the 3rd or 4th search it freezes with either no results coming up or it staying on the results of the previous search. You have to wait maybe 30 second to a minute, then delete what you were looking for and type again for new results to be served. The video attached shows me search for Cheese, then crisps then butter. You will the butter search shows no results.

I want to know if this is a server resources issue or an issue with the search function. Site was built by another freelancer using LAMP methodology. Server is a stellar server on Name Cheap.

You have to visit my site https://thepriceinsats.com/ and test the search function to understand the problem.

For those bidding, please include the number of coffee cups in the 'Get in touch' section so I know you have read the post and visited the site. If you do not include the number, i'll delete your bid automatically.
Related categories: PHP JavaScript Nginx MySQL Web Hosting