I’ve had my server running for over a year and it’s been fantastic until last week. Suddenly, I’m having a lot of issues playing certain titles on certain devices, but none of it really makes sense to me. Here’s what I know: I have two Roku TVs in separate rooms. Both are nearly identical models (and support the same codecs). One is directly connected to the server and the other uses a power line adapter or WiFi. The direct connection does not stutter when playing anything so far. The other tv is nearly unplayable with stuttering. My first thought was a network issue, but other apps (Netflix, etc) play just fine. I then thought it was transcoding ( I use QSV), but it doesn’t make sense that the DC tv doesn’t have the same issue. Other devices which connect over WiFi also have the same issue. Is there some way to tell through the logs if jellyfin is actively transcoding or failing to serve media in real-time? Or any other steps I could take to troubleshoot the root cause of my issues. Thanks in advance!
UPDATE: After checking logs and testing on a few devices, I’m pretty confident that the issue is my WiFi signal. It doesn’t seem to be able to handle streams over 3 Mbps. Not really sure what has caused my router to lose speed so significantly, or what I can do to fix it, but at least I know jellyfin isn’t the issue. Thank you everyone for your help, I learned a lot about transcoding and reading the logs at least.
I’m using eero as my wifi and for whatever reason, the eero wifi only give me max 10 Mbps, while a wired connection is over 100 Mbps. Also, my tplink WAP gives me 50Mbps.
However, if I do a speed test to an outside server, it’ll report over 300 Mbps… Something is messed up with local stream for me with my eeros. I’ll likely be removing them soon.
However, in the short term I re-encoded a bunch of my 4k rips down to 1080 and this resolved all my bandwidth issues.
I’m wondering if I have a similar issue, as outside streaming services seem to stream okay. I haven’t really found a root cause yet. I will probably test some secondary routers or extenders.
You can test this issue with laptop sending large files to your NAS over Wi-Fi. Local device communication is crazy slow on my network over the eeros. I discovered this when I moved a TV that was on a wired connection to wireless and everything feel apart from there.