My two cents about your situation, I'm quite certain that your CGNAT region is the one causing bufferbloat issue.

Currently I'm in Johor and my CGNAT gateway is 100.88.191.x, public IP is 60.53.x.x and my bufferbloat on LAN/5GHz AX is both A

My setup for wired LAN for testing is OPNSense VM - 16 Port PoE Switch - TP-Link 8 Port Switch - My PC
For wifi it's OPNSense VM - 16 Port PoE Switch - TP-LINK TL-XAP3007GC

I also have shapers on my OPNSense for the 30Mbps connection




LAN Wired Bufferbloat Setup (After shaping with OPNSense)
https://www.waveform.com/tools/bufferbloat?...38-5c7a4a6efb53

2.4GHz AX test on Galaxy S21 5G


5GHz AX test on Galaxy S21 5G


Strongly recommend you contact TM and complain to see if they can reset any gateway or check on their side, CGNAT users can only get a few no matter how many PPPoE connects/disconnects we do

Considering your router currently is already decently high-end, even with QoS it shouldn't be THAT bad
As before I shaped my traffic with OPNSense, my bufferbloat can go up to 200-400+ ms when dl/ul, and can shoot up about 100-200 while unloaded

Draka is decent, but honestly unless you're getting like cheap random crap from like Aliexpress, all of them should be more or less similar. If u want like really proven good quality cables, try and check if you can buy from infinite cables or even better ubiquiti. Tho for ubiquiti they only sell in spool of 306M for not patching cables, you can try to check on carousell.

If you want something that's more cheaper but still decent quality, I'm currently using a super thin cat6a I bought from taobao(Tmall) and it's quite good, super thin so you have to be careful, and currently the longest I got is 2m and still decent. Not sure if their 50M holds up but I like how thin they are and flexible they are.
https://detail.tmall.com/item.htm?_u=q3hjjd....5a472e8dpMqa51



Plan to buy a few more shorter cables to use coupler/patch panel to patch the white/blue LAN cables away soon , far from the best but already a decent upgrade from the rats nest I had before

Just a Chinese 16 port PoE switch I got from taobao. Used to run a TP-Link 8 port with 4 port PoE but the jump up to 16 also only means that I get 8 + 8, and since my fam is moving soon, might as well get a decked out fully PoE capable switch for future upgrades

Tho I’m currently looking at another Chinese switch from AliExpress, 8x10GBe port with PoE for about 300USD

So far so good still for what I'm using it for, 2x PoE devices, 5x normal GbE. And as long as it works and holds up it's fine. A bit lighter than a 16 port switch but I haven't encountered any issues. I understand the need for actual branded/high quality switches for like an office space or w/e but for homelab, this is perfectly reasonable.

220MYR/65$ USD from Taobao shipped for a 16 port GbE PoE switch with 2x uplink and 1 SFP port