AX82U Dead cpu core

[TrebleTA]

Hi all.
So I've noticed something odd when I check my DSL-AX82U cpu status core 3 has 0% all the time so thinking it maybe dead any way to test or if 1 core died all would die, am unsure.

 

[jacklul]

Pretty sure on some devices last core is reserved to handle Wireless traffic.
If you stress your WiFi it might show few % of usage.

 

[TrebleTA]

Thanks did the trick