Forum Discussion
sudden slow internet speed on windows 11
recently I updated my windows 10 to windows 11. after that my download speed is suddenly decreased my actual internet speed is 25mbps when I check on the speed test also its showing 25mbps but while downloading on chrome or on Microsoft edge it'll be decreased to around 200kbps and even youtube is also the same. I tried resetting the network adapter. please give me some solution.
Link speed (Receive/Transmit): 100/100 (Mbps)
Link-local IPv6 address: fe80::8de6:78e6:f807:ff5d%6
IPv4 address: 192.168.100.7
IPv4 DNS servers: 192.168.100.1 (Unencrypted)
Manufacturer: Realtek
Description: Realtek PCIe GbE Family Controller
Driver version: 10.26.328.2018
Physical address (MAC): **************
103 Replies
i dont have any killer network..etc but i know the max speed i get is 10-12mps instead of win 10 getting 300 plus thats with a vpn running
anupbadri If you go to services and then search for the killer services and 'kill' them then your problems are over.
- thanks man! i had this issue also in Windows 10. When I connect by WiFi everything works perfect (DL/UP: 1000 mb/s), but when connect by the wire i had upload max 2 mb/s. After deleting killer apps it starts working correctly. After update to Windows 11 its happened again xD but your solution is perfect! Thank You!
- Only thing that worked. Thanks for sharing!
i cant find the killer services
- This works like a champ, we should disable that server forever. It take out 150mb download speed from my 200mb plan
- Make sure report this issue using the Feedback Hub app app too.
- Same problem in Dell G7 7700 with Windows 11
Dell Optimize contain ExpressConnect, the same Killer Service from first posts (Express connect is the Rivet networks Killer networking smartbyte optimizer). Stop and Disable ExpressConnect services and remove Expressconnect from the App and the network will work fine again.
anupbadri
I experienced same issue as you mentioned.... just the funny was that i have Windows 11 on a powerlaptop (i.e. gamerlaptop) and when i was on another location i did not have this problem, just when i was at home!So the issue in my case HAD to be external and then i discovered i have (of course) an onboard network adapter which is a Killer wired and wireless network adapter, but i also have a docking station with 2 UHD adapters AND an extra network adapter!
I measured in internetspeed of 860MBps (loaded with online gaming children) so on a 1Gb not a bad performance at all
I have that external adapter connected to a separate network segment of which consist of NAS and SAS devices.... when i pulled one of the 2 connections.... problem was solved!
Please @Microsoft: Investigate why 2 network adapters together in one device are slowing down performance incredably much! Either of them separately are working perfect!
I- Did actually work! Tried different methods (thought the problem was in network switch) but actually it's 11's problem. So disabling all the network adapters (VPNs, NAS etc) in windows worked.
- Oh well... It comes back, even after disabling all the networks. For some reason the cap is moving between 40mb on upload while giving unlimited speed to download. And it switches back and forth..
anupbadri I had this issue also. Disabling IPv6 on my NIC fixed the slow speeds immediately. It was specific to facebook so far from web pages I've been visiting.
Been fighting this for days as soon as I unchecked IPv6 it rocks!! Kudos TimothyRoy
- Thank You it works
fm2753 What do you do if you do not have Killer in your services.
- I disabled IPv6 and it did help a bit but it is still a bit slower than Windows 10.
- Hello,
Please run Network Adapter troubleshooter, let us know what is reports back?
Regards.KapilArya this should matter if its IPV4 or IPV6 its a program flaw that Microsoft need to address and not just blame it on the handwear.... It worked in Windows10 so compare and contrast to see what was done and apply it to Windows 11 (not you Kapil, but MS)
- Are you facing this issue with other devices?
Have you tried updating Network Driver?
Open start and search for feedback and open Feedback Hub app and report this issue.- Facing similar issue in windows11 , speed is less than 20mpps , service provider provides 100mbps.
have raised via feedback. hope will get resolved this issue soon.- Windows team might not share direct response, but they will review all feedbacks.
Meanwhile, make sure report this issue to your hardware vendor.
I have tried numerous workarounds to solve this issue. I experienced it as well after installing Windows 11. The solution I found for my computer was in the properties for my network card. Control Panel>Network and Sharing>left click on Internet>Properties>Configure(Network Card ie: Realtek RTL8822CE>Advanced tab. In my advance tab under Property listed was 802.11d. Under that was 802.11n channel width for 2.4GHz and 802.11n channel width for 5.2GHz. I disabled the 802.11d and turned the other 2 to Auto. So far I have haven't had any further instances of slow internet. Good luck, I hope this helps.
