SOLVED: Bufferstalled while using VPN (Proxy)

[Akouniza]

Hello, 

I'm posting there in hope someone will figure out my issue, it's been a pain to figure out why and where it fuck

I'm hosting Jellyfin on a Proxmox LXC with igpu passthrough.
I5 12500 and transcoding using Quicksync, it is working on lan perfectly up to 120 mbps for the current test file (Avatar 2009)
Here's the setup:

Here's the error: 


On my local network no issues:


Here's some logs:
https://pastes.io/2026-01-16-41178
https://pastes.io/protocol0i

My setup is as follow:
On the OVH server i have hosted a headscale server that connect every client.

Homelab <= OVH Server with headscale that reverse proxy toward my homelab  <= Cloudflare domain jelly.blablabla.com that point to the headscale ip <= Client

I would love to have help and i would be more than happy to provide anything.

Below my NGINX reverse proxy setup:

Code:

server {
    listen 443 ssl;
    server_name jelly.blabla.fr;

    ssl_certificate /etc/letsencrypt/live/ blabla .fr/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/ blabla .fr/privkey.pem;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    client_max_body_size 20G;

    location / {
        proxy_pass http://100.64.0.1:8096;

        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-Protocol $scheme;
        proxy_set_header X-Forwarded-Host $http_host;

        proxy_buffering off;

        proxy_read_timeout 3600s;
        proxy_send_timeout 3600s;
        proxy_connect_timeout 60s;
    }

    location /socket {
        proxy_pass http://100.64.0.1:8096;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-Protocol $scheme;
        proxy_set_header X-Forwarded-Host $http_host;
    }
}

server {
    listen 80;
    server_name jelly. blabla .fr;
    return 301 https://$host$request_uri;
}

Here's my jellyfin docker compose:

[Akouniza]

No issues with ports open and 5G via phone or others

The issue seems to be in the nginx reverse proxy or wireguard

[Akouniza]

Issue solved by using directly my own derp server instead of the tailscale provided one