we run baler before or after production mode?

[secaliskan]

Sorry I have one question, Magento2 is slow and what you made is really useful. We need every piece of benefit which can reduce the page load time.
And our customers are checking every minute the Google pagespeed score.
I could not find excatly when to run Baler?

In Developer mode or production mode?
I saw you instructed static content deploy, so it must run on production mode since there's no need for static content deploy in developer mode...

I made all the installation step by step (baler is working and telling it finished the bundling with success) but still Google pagespeed advice to use Baler instead of standart bundling of magento.
What I'm doing wrong I dont know

When to flush cache, or we dont need to flush cache, or cache flush destroys everything? which is true.

We are magento implementor company and all other developer, no one made successful baler installation until now...

Please give hand my client's site is https://www.stockperfume.com

Thanks in advance.,

[digiltd]

This is a good step by step guide, https://www.integer-net.com/magento-2-javascript-bundling-baler-devtools/ the link jumps into part 3 of 4, but it is worth reading it from the start