Awful download and upload speeds

[denicevap 0]

Hi, I migrated from Mullvad about 6 months ago, and never had issues with the speeds.
However, lately I have been getting about 10% of my 1000 mbit/s connection.
Download and upload is rarely above 100mbits.

I tried specifying specific servers with 1gbit lines, but to no avail.

I am using linuxserver/wireguard docker image.
 

  wireguard:
    container_name: wireguard
    image: linuxserver/wireguard:latest
    networks:
      - open
    cap_add:
      - NET_ADMIN
      - SYS_MODULE
    sysctls:
      - net.ipv6.conf.all.disable_ipv6=1
      - net.ipv4.conf.all.src_valid_mark=1
    environment:
      - PUID=1000
      - PGID=100
      - TZ=###
    ports:
      - ###:###/tcp
      - ###:###
      - ###:###/udp
    volumes:
      - ./wg0.conf:/config/wg0.conf
      - /lib/modules:/lib/modules
    restart: always

My wg0.conf:

[Interface]
Address = 10.159.94.13
PrivateKey = XXXX
DNS = 10.128.0.1
MTU = 1320
PostUp = DROUTE=$(ip route | grep default | awk '{print $3}'); HOMENET=192.168.1.0/24; ip route add $HOMENET via $DROUTE;
PreDown = DROUTE=$(ip route | grep default | awk '{print $3}');  HOMENET=192.168.1.0/24; ip route del $HOMENET via $DROUTE;

[Peer]
PublicKey = X
PresharedKey = X
Endpoint = se3.vpn.airdns.org:1637
AllowedIPs = 0.0.0.0/0
PersistentKeepalive = 15


~                                                              

[Staff 9773]

Hello!

Can you please try with a smaller MTU (1280 bytes)? Sometimes the problem you experience is caused by the MTU size. In spite of the fact that for 6 months everything was fine with our service, some network change (by your ISP, potentially) might require a smaller MTU now.

MTU = 1280

You can edit your wg configuration file with any text editor. Just change 1320 into 1280, save the file and re-start the connection to apply the change.

Kind regards