Create duplicate pathItem with offset

Hello,
I'm new to illustrator scripting though I am familiar with JS.
I'm trying to offset all pathItems in a specific layer with a loop and some help from this post:

https://community.adobe.com/t5/illustrator-discussions/illustrator-javascript-count-area-with-offset/m-p/11564739#M250594

The post from Carlos helpt alot (Thanks) but I was wondering if it is at all posible to skipp the app.redraw() part since I would like to run the program on multiple pathItems and it is really slow.

Thanks in advance!