Network on the RPi3 is terribly slow

[PureTryOut]

Making an SSH connection over wifi to a RPi3 running (as of right now the latest commit) postmarketOS is unbelievably slow. I'm not sure what we can do about this and if I'm the only one or not, but right now it's unbearable. Response to typing in a character can be either instant or take a second or two.

▶ ping  192.168.1.180
PING 192.168.1.180 (192.168.1.180) 56(84) bytes of data.
64 bytes from 192.168.1.180: icmp_seq=1 ttl=64 time=5.49 ms
64 bytes from 192.168.1.180: icmp_seq=2 ttl=64 time=2.75 ms
64 bytes from 192.168.1.180: icmp_seq=6 ttl=64 time=5.86 ms
64 bytes from 192.168.1.180: icmp_seq=7 ttl=64 time=4.19 ms
64 bytes from 192.168.1.180: icmp_seq=11 ttl=64 time=8.67 ms
64 bytes from 192.168.1.180: icmp_seq=12 ttl=64 time=4.18 ms
^C
--- 192.168.1.180 ping statistics ---
12 packets transmitted, 6 received, 50% packet loss, time 11164ms
rtt min/avg/max/mdev = 2.755/5.195/8.676/1.854 ms

As you can see there is quite a bit of packet loss as well.