Recently, my downstream speed is acting quite weirdly.
Situation:
It drives me crazy. Thanks.
Situation:
- ISP delivers 300 mbps internet connection.
- When speed testing, I reach around 170 mbps.
- When I am really downloading a file from any high-speed server, I get about 30 mbps.
- Downloading using different computer with very same connection and cable is fine and full-speed.
- I booted Ubuntu Live CD and do speed test. I have perfectly fine 300 mbps in Live CD OS.
- So I am currently pretty sure this is not ethernet card, cable, modem or ISP issue.
- Described behaviour above applies for Google Chrome, Mozilla Firefox and even for running virtual machines.
- I have fully updated Windows 10 and Intel Ethernet I219-V card.
- I don't check it everyday but I believe download speed was really 300 mbps in Windows 10 at least a few months ago.
- I did not install any "optimizers" or anything suspicious. Also, it doesn't seem anything is "silently eating" my connectivity; when not downloading, adapter meter is quiet.
- To do obligatory malware check (nothing found).
- To disable Windows Firewall.
- To switch Windows account, to boot in safe mode.
- To disable QoS in both – Windows group policy management and adapter settings.
- To disable "Receive Window Auto-Tuning Level" Windows feature.
- To use high-speed VPN connection.
- To restart router.
- To tweak values within "Intel PROSet Adapter Configuration Utility". Everything had been default, I've tried to change values of "Large Send Offload", etc. Since nothing helped, I returned everything back to default.
- To install 3rd party antivirus and firewall because I hoped it would override possibly faulty Windows checks.
It drives me crazy. Thanks.