I have the pi rock 3B, running on debian. When I use the WiFi, a sudo apt update or sudo apt upgrade command will run exceedinly slowly. Likewise a “sudo apt install” will be very slow, maximum 15kB.sec, usually less than one. Here’s an example (installing locales here) :
a WGET command will be swift, a few MB.sec speeds.
Using Eth0 is fast, I only get this issue with WLAN0, which is set to the following in interfaces :
source /etc/network/interfaces.d/* # Network is managed by Network manager auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp hwaddress ether 0E:50:e7:xx:xx:xx auto wlan0 iface wlan0 inet static address 192.168.1.9 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 gateway 192.168.1.1 #dns-nameserver 192.168.1.1 #dns-nameserver 126.96.36.199
Any ideas what it could be?