Plex Direct Stream being throttled on PC

Windows 10
Player Media Player Version 3.71.1

First, I’m using a friend’s server.

It’s been almost a week or two now but I’ve noticed a lot of buffering on the server. So I decided to test it on various devices.
The thing is, same server & direct stream works smoothly on my Shield Tab and Pixel 2 plex apps. No buffering. Even streaming files requiring 50Mbps+ speed.

It only happens on PC (Windows 10) - PMP 3.71.1 . Using 5Ghz with 125Mbps down speed. I’ve already tried disabling firewall, rebooting Router, Resetting network adapter and changing DNS. Don’t have any antivirus installed.

What really frustrate me is that under ‘Network’ tab in task manager it shows the speed every app is using and I notice that when I’m trying to stream something (Direct), the speed never goes over 8Mbps, it always hover over 7.3-7.8Mbps at max.

Whereas other apps like browsers & Netflix app easily crosses 100Mbps if I download/stream something of that size.

Is there any way to resolve this issue?

PMP has a bandwidth limit setting for remote streams. Verify its setting.

The server of your friend could also have a bandwidth limit in place. You’d need to ask him/her about it.

I can’t find any bandwidth limit setting in my PMP. If you mean the quality setting I’ve already set it to ‘Maximum’, as well as manually switching to ‘Play Original Quality’ if it doesn’t automatically do so.

As for on my friend’s side, I’ve already said that I can stream the same files with original quality over my mobile or tab. It just happens on PC.

If these are full-HD or higher quality files that doesn’t make much sense.
And you could still be looking at transcodes on these devices - depending on what limits your friend has set on his server.

One setting I recommend for every Windows computer which is used as either a server or client:

These settings are already off. My friend has already said there’s no limit. Also I tried it on Ubuntu which ran everything just fine, no buffering issue there at all. So it must be Win10. I’ve already tried restoring system to a few weeks back (when there was no issue) but it didn’t help.

I’ve tried switching insecure connection to every option, also increasing cache size and trying to connect with Ethernet / Wifi (2.4 & 5Ghz), updating wifi drivers, downgrading to originals … I can’t think of anything else.

One thing that I’m very sure of is, it’s only happening in Win10 because every other platform (mobile, tv, tab, Ubuntu) is working perfectly fine.

There were some issues reported with the latest cumulative Windows 10 updates.
I wonder if you are affected by this.
https://borncity.com/win/2019/01/18/windows-10-network-bug-in-all-versions-fix-are-planned/

Damn it! Guess all I can do is wait and see how it goes in next month updates.

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