Uplading a 1mb file in my network is taking a lot of time

Lately I'm begging to notice an annoying slowness when uploadinf files to the sites on my network.
It began felling slow when I installed SmushPRO , i feel that it got a little better since I deactivated it.
Now i don't know if Defender is eating too many resourses.
I've granted access if you want to have a look.

Thanks in advance