This kind of zlib optimization per device it's not very big (about 12% better in my A1), but, at least, it's not less than zero.
I must say I don't really noted any improve while I was reading but... numbers are numbers.
I've though this can be a kind of placebo, and that's because I'm uploading here, just in case someone wants to prove... Thanks.
Good luck.
Edit:
Here we go again.
Now with Dragon (AuraHD, H2O) version too.
If you try, please share your impressions.
Edit²:
Nova (ClaraHD) added. I can't test on the device, therefore the risk is all yours (as always).

Edit³:
Added clean file. Even better (at least, if you don't own several devices or use locale

). Without locale and device seems more
responsive.

Note: is for A1.
Good luck.