Plex buffering issue with LG 55QNED86T6A

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Forums › Home Theatre (including HTPC and EPG Collector) › Plex buffering issue with LG 55QNED86T6A

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fritzman

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#3382004 9-Jun-2025 11:07

Thanks for all the ideas and suggestions team...

It seems to be running really well using the 5Ghz wifi connection on the TV now, (way better than the wired one, so I suspect it may be 10/100 rather than gig), and Direct Play.

Sons Rig: Asus TUF Gaming X-570, Ryzen 9 3900X, G.Skill neo 2x16Gb 3600's, Sabrent Rocket 1Tb M.2, Win10 Pro, Phanteks case, EVGA G5 850W.

NAS: DS1819+ - 52Tb in Raid6

My rig: HP Elitebook X360 Lappy with a 2Tb SN850.. woohoo.. I've retired!

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freitasm

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#3382075 9-Jun-2025 11:54

Have you checked the connection speed reported by the router or switch when using a wired connection? Have you tried a different cable in case the one in use was malfunctioning?

gehenna

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#3382117 9-Jun-2025 14:14

fritzman:

... (way better than the wired one, so I suspect it may be 10/100 rather than gig).

10/100 should still play fine.

freitasm

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#3382118 9-Jun-2025 14:16

gehenna:

10/100 should still play fine.

It would. Unless the cable was damaged and there were other errors happening.

SepticSceptic

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#3382327 9-Jun-2025 23:25

freitasm:

Have you checked the connection speed reported by the router or switch when using a wired connection? Have you tried a different cable in case the one in use was malfunctioning?

Kinked, bundled in a tight loop, squished, broken retainer clip, etc.

fritzman

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#3385464 19-Jun-2025 10:50

Thanks again.
replaced the cable from the TV to the router, and consistently tests using Speedtest, at just shy of 100/95 and googling confirms the tv has USB 2.0 ports and 10/100 Ethernet.
Wireless results test consistently in the 190-230/95 range.
Higher results connected wirelessly to the TP-Link X55 router rather than the (wired) X55 satellite right next to the TV.
I think fine-tuning the Router QOS settings and the Plex Server settings have resolved the issues, so thanks for all the support & ideas.
I’ll keep running wired (for stability reasons), and use the WiFi as a fallback should any further buffering occur, as none has now for a couple of weeks now.
B.

Sons Rig: Asus TUF Gaming X-570, Ryzen 9 3900X, G.Skill neo 2x16Gb 3600's, Sabrent Rocket 1Tb M.2, Win10 Pro, Phanteks case, EVGA G5 850W.

NAS: DS1819+ - 52Tb in Raid6

My rig: HP Elitebook X360 Lappy with a 2Tb SN850.. woohoo.. I've retired!

Heat under fritzman (152-0-0)

freitasm

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#3385465 19-Jun-2025 10:51

Do you have QoS on?

Any specific reason? I've found that QoS implementations are pretty bad across most consumer routers.

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Spyware

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#3385468 19-Jun-2025 10:58

fritzman:

I think fine-tuning the Router QOS settings and the Plex Server settings have resolved the issues, so thanks for all the support & ideas.

QoS would NOT apply to LAN traffic I don't think.

Spark Max Fibre using Mikrotik CCR1009-8G-1S-1S+, CRS125-24G-1S, Unifi UAP, U6-Pro, UAP-AC-M-Pro, Apple TV 4K (2022), Apple TV 4K (2017), iPad Air 1st gen, iPad Air 4th gen, iPhone 13, SkyNZ3151 (the white box). If it doesn't move then it's data cabled.

darylblake

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#3385471 19-Jun-2025 11:13

I generally tend to find some of my older TV's crash with Plex sometimes now days. TVs are about 4+ years old. Plex used to work fine. But android runs quite slow sometimes.

Have been using a Xiomi TV box, its modern and quite powerful. Have had absolutely no issue.

fritzman

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#3385472 19-Jun-2025 11:21

darylblake:

I generally tend to find some of my older TV's crash with Plex sometimes now days. TVs are about 4+ years old. Plex used to work fine. But android runs quite slow sometimes.

Have been using a Xiomi TV box, its modern and quite powerful. Have had absolutely no issue.

The X55 has the ability to prioritise selected devices irrespective of whether they’re connected wirelessly or wired, so I figured it couldn’t hurt. That along with static ip addresses for the TV (wired & wireless), the NAS and the NUC.

Sons Rig: Asus TUF Gaming X-570, Ryzen 9 3900X, G.Skill neo 2x16Gb 3600's, Sabrent Rocket 1Tb M.2, Win10 Pro, Phanteks case, EVGA G5 850W.

NAS: DS1819+ - 52Tb in Raid6

My rig: HP Elitebook X360 Lappy with a 2Tb SN850.. woohoo.. I've retired!

Heat under fritzman (152-0-0)

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#3385477 19-Jun-2025 12:13

fritzman:

The X55 has the ability to prioritise selected devices irrespective of whether they’re connected wirelessly or wired, so I figured it couldn’t hurt. That along with static ip addresses for the TV (wired & wireless), the NAS and the NUC.

QoS and prioritization applies to routed traffic, no routing is occurring between devices on your LAN.

fritzman

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#3385479 19-Jun-2025 12:21

Spyware:

fritzman:

The X55 has the ability to prioritise selected devices irrespective of whether they’re connected wirelessly or wired, so I figured it couldn’t hurt. That along with static ip addresses for the TV (wired & wireless), the NAS and the NUC.

QoS and prioritization applies to routed traffic, no routing is occurring between devices on your LAN.

Seems like TP-Link have their own version that can include acceleration of both wired & wireless clients... In my case, the TV is off, but I have the TV (wired & wireless connections), the NUC and the NAS in the same group.

Sons Rig: Asus TUF Gaming X-570, Ryzen 9 3900X, G.Skill neo 2x16Gb 3600's, Sabrent Rocket 1Tb M.2, Win10 Pro, Phanteks case, EVGA G5 850W.

NAS: DS1819+ - 52Tb in Raid6

My rig: HP Elitebook X360 Lappy with a 2Tb SN850.. woohoo.. I've retired!

Heat under fritzman (152-0-0)

Spyware

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#3385481 19-Jun-2025 12:56

As I say this DOES NOT apply to local traffic between your devices!!

fritzman

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#3385482 19-Jun-2025 13:03

Ok. Cheers.

Sons Rig: Asus TUF Gaming X-570, Ryzen 9 3900X, G.Skill neo 2x16Gb 3600's, Sabrent Rocket 1Tb M.2, Win10 Pro, Phanteks case, EVGA G5 850W.

NAS: DS1819+ - 52Tb in Raid6

My rig: HP Elitebook X360 Lappy with a 2Tb SN850.. woohoo.. I've retired!

Heat under fritzman (152-0-0)

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