Slow Editor Long page

Hello,

I am using the Stackable page builder to build my site. But when I use a lot of columns the editor becomes very very slow. Chrome says the memory usage around 800-1100 MB.
Would lover to hear what I can do to fix the performance.

There a multiple columns(row) and in these columns I have 6 columns.

It is very hard for me to keep editing these large pages like this.