Maybe we don’t talk about the same. The uplink at OPs router isn’t the problem, there is enough upload speed so that others in Europe can stream. Users in Asia don’t have enough bandwidth, so there’s a bottleneck somewhere in between.
And yes, a VPN could help by routing the traffic through other hops, but chances are that it doesn’t help or even make it worse, but it’s worth trying.





Latency shouldn’t be a big problem if it doesn’t have massive spikes. Packet loss could be a problem, seems like Jellyfin doesn’t have an option zu increase the buffer size which may help. Or the problem is in combination with transcoding.