Forum Discussion
sudden slow internet speed on windows 11
anupbadri If you go to services and then search for the killer services and 'kill' them then your problems are over.
- wojtooshApr 23, 2023Copper Contributorthanks 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!
- jeffersonczaniniDec 18, 2022Copper ContributorOnly thing that worked. Thanks for sharing!
- badboy1966Apr 28, 2025Copper Contributor
i cant find the killer services
- johnydaiSep 04, 2022Copper ContributorThis works like a champ, we should disable that server forever. It take out 150mb download speed from my 200mb plan
- DJK123Aug 25, 2022Copper Contributor
mstremmelaar it works went to services and stop killer
- therahulpatelJan 01, 2022Copper Contributor
mstremmelaar Thanks It works for me
- WenchxHunterOct 20, 2021Copper ContributorThanks. Did as you suggested and worked instantly. My question is tho does anyone know why this is happening?
- bryandav1965Oct 28, 2021Copper Contributor
WenchxHunter No clue. The upgrade must use generic Registry values that don't work for all. But this little tool has always fixed my problem. It simply tweaks the registry values for better throughput. Wish I had a better reason as I'm just guessing. But this always seems to happen with upgrades and some updates. Glad the fix worked for you.
- znakeeyeOct 30, 2021Copper Contributor
In my case, I simply disabled Citrix Virtual Adapter. It seems this virtual device did not like the upgrade from Windows 10.
- SidEwigkOct 27, 2021Copper Contributor
The Reason for the Speed Problem is very Easy. On the Device Manager, select the Network Interface, right click and then on preferences. Click on Extended. Seach for Speed & Dublex. On my device the 2,5Gbs entry was selected. Go to 1.0 GBS FullDublex and the Problem is solved!!!
- SuperproheroJan 10, 2022Copper Contributor
SidEwigk THIS WORKED, like a charm!! New PC build was fine yesterday, this morning it was very slow. Changing the adapter to 1Gps Full Duplex fixed it. Thank You!
- vvaruOct 12, 2021Copper ContributorHey man, thanks a lot. This worked like a charm.
- ElinaPaOct 09, 2021Copper ContributorKiller network is not in my computer services, What to do??
- hugodlrOct 06, 2021Copper Contributor
mstremmelaar of course, I love you now - works perfectly!
- shreyamtanejaOct 06, 2021Copper Contributordude thank you so much i can finally watch youtube again.