And, excuse me for saying that, but I found your post lacking in substance. Writing "It's super slow, we've tried everything" doesn't show us about what you've tried and with a detailed explanation maybe the thousands of eyeballs who saw that post would be able to help you find the problem you had. ;)

https://www.reddit.com/r/javascript/comments/42ozl3/why_we_s...

we are serving our JS files as static assets behind nginx - we dont run nodejs on the server. does webpack allow you to create static assets (htmls,css,js) and serve them ?

the big issue is of course the fact that some libraries (Handsontable) are coming from github and are not on npm. is it possible to use them - with overrides,etc. ?