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Tech Support Unifi not getting full speed 500mbps, DIR-868L slow WAN speed

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junclj
post Aug 1 2020, 09:04 AM

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QUOTE(neato4u @ Jul 27 2020, 03:39 PM)
Hi guys,

I tried searching for a solution for this but could not get any.

Just bought DIR-868L AC1750 to replace the old stock Unifi DIR-850L AC1200.
FYI running on firmware 1.22SHC
Everything works but I only get maximum 350mbps download on 868L (tested on http://speedtest.tm.com.my)
When tested with DIR-850L I get 500+mbps download.

user posted image

I used Cat5e cable for both WAN and LAN1 to PC.
Tried on another PC, same result.
Have reset router, same result.
Have even swapped this router with another DIR-868L router - that one gave me slower speed around 250mbps (that one running on older 1.09SHC)

Appreciate the advice here, especially from other 868L users if any.

user posted image
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Make sure CPU is Intel Core i-series 8th gen and above or AMD Ryzen 2nd Gen and above, RAM at least 8GB and make sure your Windows OS not install on a harddisk. Go get a nvme SSD.
https://shopee.com.my/ADATA-SX6000-128GB-25...5106.1489429588

Clean install a new Windows OS on the m.2 nvme SSD. Then do the speedtest again. Before speedtest, make sure to turn off antivirus especially Kaspersky.

This post has been edited by junclj: Aug 1 2020, 09:22 AM
junclj
post Aug 1 2020, 09:16 AM

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QUOTE(neato4u @ Jul 29 2020, 07:14 AM)
Why are you doubting the cable when it can reach 500+mbps on the old router. This alone proves that it is sufficient to handle that transfer speed.

I cant find NAT acceleration on the 868L unfortunately.
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It's definitely the router issues, two solutions to get maximum speed.
1. Wait for firmware updates to get fix 500mbps supports (same like last time Asus RT-AC55UHP did but impossible for D-Link).
2. Return the product then buy a high-end router.

D-Link DIR-868L AC1750 just selling RM139, the CPU and RAM of this router is too low end. It is hard to performs up to 500mbps. Usually this router is good enough for Unifi 100mbps.
I recommend you to buy this router for 500mbps.
https://shopee.com.my/Asus-RT-AX3000-Wi-Fi-...2485.5718039417

For those user who subscribed to 500mbps/800mbps/1gbps. Please make sure you have to invest at least RM1,000 for your home network devices in order to get your satisfy speed. If you really can't effort to invest more than RM1,000 to optimize your home networking, please downgrade to 100mbps.

This post has been edited by junclj: Aug 1 2020, 09:50 AM
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