Ok, the logs indicate that the app is not receiving the data fast enough from the server. Can you send me the server log for that same time period from your app? If you’re not sure, which file that would be, just send me the entire zip file of all the logs.
Got the log. Well, your log is full of errors. So many that the time from your playback attempt isn’t even there anymore, so I can’t tell what happened with your test. You’ll need to play it again and grab the logs right away. I don’t think I’ll need the android logs, just the server.
Jun 10, 2022 13:59:00.892 [18336] DEBUG - Failed to stream media, client probably disconnected after 638976 bytes: 10054 - An existing connection was forcibly closed by the remote host
This is persistent in my logs when experiencing this issue, anybody recognize it?
I enabled IGMP Proxying on my router and the buffering happens less frequently, but still occurs. Any and all help is welcome
IGMP snoppoing shouldn’t have anything to do with it. IGMP is for multicast, something that Plex doesn’t use (and 99.9999% of all applications known to mankind don’t use - it has a very specific, niche use case - one you usually don’t have in home networks).
That said, I would disable it again, because enabling IGMP snooping can break a lot of other things.
It was actually enabled by default on my new router oddly enough
I’ve tried using a different computer to isolate this issue, still remains the same. I took my PMS to a different location to try a different network (different ISP, router, modem) same issue. I cannot isolate this issue for the life of me. It is not my hardware, it is something with the PMS client itself. I have more than enough bandwidth to be streaming files, but regardless if I am local, remote, wired, wireless, 1gb up/down, 300mb up/down, I am constantly buffering. PMS, like I’ve mentioned, is always connected directly to my router which I have replaced in effort to find the culprit in this issue. I have 1gb up/down always on my PMS. I cannot use my PMS and am beginning to question why I even paid for Plex Pass in the first place if I can’t even stream my ■■■■■■■ media.
I think my solution here is to consider my time with Plex done, my money spent on Plex Pass wasted and move onto another service, as I do not experience this issue on similar services.
One thing that comes to mind that once bugged me in a similar way (I just couldn’t find the culprit): Check if you have jumbo frames enabled on the box that hosts your Plex. Plex does not play well with jumbo frames at all. When I was in your shoes, that actually fixed it for me.
There is a sentence about this buried somewhere in the Plex documentation.
Also, I just read the thread history. Your iperf outputs looked VERY bad. You are not getting more than 10 mbit/s on those screens you posted. No wonder your larger files buffer like hell. I am betting this is a network issue. You might have a speed mismatch between your server and your switch, for example (auto-negotionation failing is not uncommon). Broken network cable. Something along those lines.
Yea iperf actually hasn’t been updated/recompiled since 2016 for Windows, hence the ■■■■■■ results haha. Linux and Macos give me full results. I’ve since moved onto using OpenSpeedTest for testing bandwidth P2P. Nothing out of the ordinary, but I’m curious if there’s anymore windows based testing that’s more longterm like iperf is
Unfamiliar with jumbo frames, is that a setting or?
Yes, Jumbo Frames is a setting, usually found at the network adapter settings (not too familiar with Windows). It’s also referred to as “MTU size”. It should be set to 1500. Anything higher is considered jumbo frame size. Also check the switch port the server is connected to. Switches also allow you to enable jumbo frames.
While you are at the switch, check the port statistics for any rx/tx errors. Replace the network cable, too.
The MTU size on my router is currently set to 1492, which I believe is the default for a PPPoE connection, which I have. It’s connected directly to the router, no network switch. I’ve replaced the cable about 3 times now LOL. I keep wondering if it’s a faulty ethernet controller on my motherboard, but the issue remains the same even on a different machine.
1492 should be fine. As long as your are under or exactly at 1500, you’re good. But you need to check this on your server. Your network adapter should have settings (hardware settings) to control this. It will not be enough to set this at the router/switch.
Ideally, you want the same MTU on both your server and your router.
Made sure the MTU size matched my routers on my server. Went through my ethernet controllers properties:
Disabled Energy-Efficient Ethernet
Disabled Flow-Control
Disabled Gigabit Lite
Disabled Green Ethernet
Disabled Interrupt Moderation
Thought this fixed it last night, but same issue arose today. Really just don’t know what to do.
Then I am afraid I am out of ideas myself. I hope the pros can jump in and pick it up from here. Good luck. And don’t give up. Plex is awesome! You will get this resolved, eventually.
Appreciate your help, really hope it gets solved soon. Have a good night 
Would you mind explaining your setup once more? I’ve read the thread several times now, and I’m still sort of confused as to what is where.
To give you an idea of my setup:
Server running PMS is hosted by OVH in Quebec, Canada. Connection is 1 Gbps up and down.
Media is hosted on Google Drive, mounted on the above server.
Client is a Shield TV 2019 Pro, located in California, USA, wired directly to the router. Connection is 500 Mbps up/down via Frontier fiber.
My only bottleneck is Frontier’s terrible peering, so I’m always at their mercy when it comes to playing back UHD remuxes. Sometimes (rarely) it gets so bad that I cannot direct play even the smallest file.
No worries!
PMS is on a Windows 11 computer with a i5 11400, Asus TUF B560M motherboard, ~20tb of storage that all run solid (have ran SMART checks), ethernet is directly connected from motherboard to my router which is a Netgear MR60, router is connected to a fiber ONT I do not have the name of. Speeds are 1gb up/down
This issue happens on all clients, to list some of them; Windows, MacOS, Android, Android TV, Google TV, etc. Doesn’t matter if they’re wired, wireless, local or remote.
So, just to make sure: This issue occurs even when your PMS, client, and media are all in the same house on the same network?
