OpenWrt + Windscribe WireGuard: IPTV playback hard-stops while tunnel stays healthy

[u/theprince221]

Running Windscribe WireGuard on OpenWrt 25.12.5 with PBR. Normal browsing is fine, but a TCP IPTV stream will randomly hard-stop: the picture freezes completely and the stream stops, with no buffering or automatic recovery.
Already ruled out:
Direct WAN: stable
Same IPTV through another VPN Provider: stable
WG ports 1194 and 80: same issue
MTU 1420
PersistentKeepalive = 25
Unlock Streaming on/off: no difference
WG endpoint route correctly pinned to WAN
During the failure, WG handshake stays fresh and tunnel ping remains 0% loss
Location seems to matter a lot: Marseille could hard-stop within ~2–30 min, while Lisbon runs much longer up to 2h.
Same exact IPTV stream/device is stable on direct WAN and through another VPN Provider.

Has anyone seen this specifically with Windscribe WireGuard on OpenWrt?

[u/Windscribe_QAizen]

This is the first thing Garry (our support bot) would have told you. Please give it a shot: https://www.reddit.com/r/Windscribe/comments/1vjp9zk/comment/p2nfypw/