Emulator On Vs Emulator Off Pagespeed Difference

Web Performance Discuss Test Results
#1

Hi,

we are running a page speed test on our pages.

Test no. 1: 28 Sec

Test Location: Nearest location
Connection: 3g Fast
Emulator Off

Test no. 2: 36 Sec
Test Location: Nearest location (Same as before)
Connection: 3g Fast
Emulator On

I just want to know why there is an increase in seconds. Why does this happen? Why time increases when we turn on the emulator?

Thanks in Advance
Rzoro

#2

Is “turn on the emulator” the same as passing mobile=1 (or enabling mobile emulation in the UI)?

When mobile emulation is enabled the CPU is throttled to also match the CPU performance of a mobile device. Depending on the site it might also be loading different content when loaded in a mobile form factor vs desktop.