CPU requirement

Hello,
Please, what is the minimal cpu requirement for meet with Firefox on Linux and same question for the application Jitsi Meet on Android. I test twice on several low devices and as cpu is 100% used while meeting, then no way to use meet correctly to discuss with other people.

Do you see difference in cpu usage if you turn on audio only mode for those clients?
Video encoding and decoding is normal to use a lot of cpu.

Yep, the video encoding and decoding have high cpu usage. That’s why I ask the minimum cpu required…

Below some processors tested, with same high speed fiber optic connection internet.

With audio off, picture freezed + cpu 100% :
Meet with Firefox on Linux :
Intel Pentium SU4100
Intel Atom n270
App Jitsi on Android :
Dual-core 1.0 GHz Cortex-A9 (cpu) + PowerVR SGX540 (gpu)

With audio on + perfect image + cpu ~20% :
Meet with Firefox on Linux :
Intel i3 6006U
Intel i5 2500K
Intel i5 8250U
App Jitsi on Android :
Octa-core 1.6 GHz Cortex-A53 (cpu) + Mali-T720MP2 (gpu)

So, could you tell us the minimum cpu require for Meet with Firefox on Linux and the App on Android ?