Earlier quoted context omitted.
I just checked: 514kB gzip vs 314kB minified+gzip. Not negligible, IMO.
How big was your original JS package that it gzipped down to 514kB? Like 30 megs? Really sounds like you have bigger problems.
OTOH: it shows data. A normal size data set is 2000-3000x rows and 300-500 columns. If you output that as a simple table, the browsers gets super-slow. So another component has to be added. It adds up.