"System Interrupts" CPU usage goes up with 4G Modem after Bitdefender installation

raya2

I connect to internet with 2 different modems (in separate times):

1- ADSL Modem.

2- 4G Modem.

There is no problem with ADSL modem when downloading or something.

But when I start download something using 4G Modem, Usually after some few minutes or less, The CPU usage of "System Interrupts" in task manager, goes up & makes the PC very very slow that I can't run any app; even the moving of mouse's curser became very slow. If I stop downloading, CPU usage goes to normal again.

I didn't have this problem before. But after installing the Bitdefender Free antivirus, this problem started to happens for my PC. So I think its something related to Bitdefender Free.

Whats your solution?

Stefan I.

Hi Raya,

Please try to temporarily uninstall Antivirus Free and restart to see if this behavior persists without it.

Thanks!