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Since the slowdown started a few months ago and often occurred from 9pm to 4am, it's likely because of TM HSBB Fiber network congestion during peak traffic hours, which in turn may be root-caused by the introduction of 5G.

Note that TM Wholesale also sells TM HSBB Fiber network access to the 5 celcos and DNB, ie 4G/5G ride on TM HSBB Fiber network for backhaul access to the Internet, ... besides it's own TM Unifi Fiber retail business.
....... DNB has about 6Gbps of 5G bandwidth capacity for it's 3.5GHz frequency band and sells 1Gbps to each celco. Each celco has about 2Gbps of 4G bandwidth capacity for it's sub-3000MHz frequency bands.

If each TM HSBB Fiber has a bandwidth capacity of 10Gbps (= 10G-PON technology), DNB's 6Gbps of 5G bandwidth capacity may be the main culprit because 36% of mobile subscribers are now on 5G, ie 5G is getting more popular.
....... If so, the problem will only be solved when TM HSBB Fiber network is upgraded to NG-PON2 (40Gbps) technology. .......

https://en.wikipedia.org/wiki/10G-PON
10G-PON (also known as XG-PON or G.987) is a 2010 computer networking standard for data links, capable of delivering shared Internet access rates up to 10 Gbit/s (gigabits per second) over existing dark fiber. This is the ITU-T's next generation standard following on from GPON or Gigabit-capable PON. Optical fibre is shared by many subscribers in a network known as FTTx in a way that centralises most of the telecommunications equipment, often displacing copper phone lines that connect premises to the phone exchange.  ...

https://en.wikipedia.org/wiki/NG-PON2

https://www.nst.com.my/news/nation/2024/04/...ge-803pct-fahmi - 2024/04/26 - msia's-5g-adoption-rate-almost-36pct-coverage-80.3pct-fahmi
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wow, are you network expert?

This sounds like TM, always over sell first, then fix when congested.

They never upgrade first before sell. urghh.

wow, are you network expert?

This sounds like TM, always over sell first, then fix when congested.

They never upgrade first before sell. urghh.

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Yes, another reason may be because TM has recently started overselling Fiber ports to itself/TM Unifi Fiber and to other telcos, eg Maxis Fiber, Celcom/Digi Fiber, Astro Fiber, Time dotcom, etc, in order to increase profits = the TM HSBB Fiber network becomes more prone to network congestion during peak traffic hours.
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Speedtest no problem, but when loading streaming content, very slow or no load.

This is the weird part.

Same here, load video also nowadays need to buffer. Like back in year 2000

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I'm on a Mobile 4G phone plan that gives FHD or 1080p/3.5Mbps video-streaming. Most nights from 8pm to 1am, can't stream 720p/2.5Mbps videos, ie can only stream 320p/0.8Mbps videos. Afternoons, usually no problem, even streaming 1080p/3.5Mbps videos.
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Yes, this is the most frustrating.

After hard work, want to relax with Kdrama also cannot.

TM mobile?

Used to be that mobile more unstable compared to fiber, but now fiber also like 8mbps ancient streamyx, always buffering.

Every month pay Rm136 for this quality, haiya.

Just checking how widespread this problem is.

I checked with friends and other forums, they all confirmed that Unifi very slow to load major sites, from 9AM till 4AM.

This started since last 2 months for some people, started 3 weeks ago for me.

Twitter, Facebook, Instagram, even Youtube.

Anything with videos will be extra slow or wont even finish loading.

Odd thing is, its always 9AM till 4AM, give or take, every day.

TM doing something funny?

Why no announcement? 

Nope. All as usual but im running on google dns

youtube seems fine for me using 4k, youtube issue is probably more because of youtube lowering bandwidth to adblock users

this has nothing to do with DNS
this bad routing issue has been going on for few years already...gotten worse these few week

what started as only unifi is now affecting if you're on telco lines too
at night loading those GIFs and 3rd party video...you can actually see it has difficulty loading

u go test speed/fast...it will still record full speed but usage wise very different experience due to bad routing depending where the content is located
p/s : meanwhile the guy that's denying we have bad routing issue is commenting in this thread

wow, why do they have this routing issue? Why are they not fixing it?

Is it expensive to fix? Need upgrade?

wow, why do they have this routing issue? Why are they not fixing it?

Is it expensive to fix? Need upgrade?