Tested on several devices from the USA, improvements varied from 38% to 63%.
The TrucknTow webshop was an interesting case, as they already have focus on Magento 2, but will still be on Magento 1 for a while.
As the website isn't configured with HTTP/2, this step was out of consideration. Nevertheless, we could still improve as the video comparions are showing. As TrucknTow is situated in the United States of America, I only conducted tests from the States.
I ended up testing on several devices These were as following:
- on 3G on iPhone 7+, tested from Dulles, USA
2.4 seconds versus 5.0 seconds (improvement of 52%);
- on 3G on iPhone 8, tested from Dulles, USA
1.9 seconds versus 5.2 seconds (improvement of 63%);
- on 3G on Moto G4, tested from Dulles, USA
2.4 seconds versus 3.9 seconds (improvement of 38%);
- on 4G on Moto G4, tested from Dulles, USA
1.6 seconds versus 2.9 seconds (improvement of 44%).