cant watch 4k videos fatal player error

[fflam]

Reverse proxy yes, NGINX proxy manager (https://nginxproxymanager.com/).
1 client is watching this vod on a Roku. when i click the info button on the dashboard it says it is getting transcoded to 17.0 Mbps TS H264 AC3. there should be no direct play right now.

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NGINX settings for jellyfin.

Scheme: http
Websockets Support: on
Block Common Exploits: on
Cache Assetts: off

SSL:
Force SSL: on
HTTP/2 Support: on
HSTS Enabled: on
HSTS SubDomains: ON

Advanced:
Custom NGINX config:

Code:

# Disable buffering when the nginx proxy gets very resource heavy upon streaming
    proxy_buffering off;

    # Proxy main Jellyfin traffic
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-Protocol $scheme;
    proxy_set_header X-Forwarded-Host $http_host;
    proxy_headers_hash_max_size 2048;
    proxy_headers_hash_bucket_size 128;
   
    # Security / XSS Mitigation Headers
    # NOTE: X-Frame-Options may cause issues with the webOS app
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "0";
    add_header X-Content-Type-Options "nosniff";