Q: Searching an extensive table in Safari 10 is slow

Supposedly this was not in issue with Safari 9, but since a user updated to Safari 10, when they try to type into a search box on a table on their website, typing is VERY slow. You can see a test site here:

http://www.zeebedesigns.com/slow-search-typing

Try searching in the search box. Also try the site on Chrome or Firefox, both work REALLY fast.

Any ideas why with version 10 of Safari this is happening??