Debugging using Google Page Speed Insights - Is it possible to pass a key-value params to disable RocketLoader functionality on a single call

[jht]

I am trying to debug a page’s performance and am running Google Page Insights. We are using Rocket Loader and our ‘Reduce the impact of third party code’ results look like this:

Not good! - I’d really like to untangle what’s going on here but do mostly server side work. I feel that Rocket Loader is potentially masking what our native load time is (which might load other assets). Is there a way to turn this off? I included the main thread gif to see if there’s something that Rocket Loader might be interfering with. thanks

[Judge]

Yes - rocket loader effectively masks the time other scripts are running since it becomes the script that actually runs your javascript once the HTML is rendered, which reduces paint time (in many circumstances).

You can turn off rocket loader by going to speed → optimiation.

[stuart2]

Very slow rocket loader recently, I had my page running fine 70% + on mobile, recently this dropped to 42% without any changes on my side, could there be any reason for this. desktop is at over 90%

[fritex]

Hm, maybe due to some errors in fetching Rocket Loader file?

At least, we all should be patient and wait just a bit more for the Google PageSpeed to update their Bot to accept HTTP/2 either

For a specific URL or file, you can add Page Rule to disable the Rocket Loader just for it, and make it enabled for the else.