Throttling speed on Windows 10 refers to the reduction in performance limits imposed by the system.
Throttling speed on Windows 10 refers to the reduction in performance limits imposed by the system.
I expected gigabit performance but got about 140mbps. Speedtest says around 300mbps, sometimes closer to 400. My NIC is at 1.0 gbps and the network card seems fine. I switched to a fresh Windows install on a spare SSD drive—suddenly speeds reached 1gbps without issues. This appears to be a Windows problem. I’m not ready for another install unless it’s absolutely necessary. If you need more details, just let me know. It looks like the issue lies within my Windows setup. I suspect throttling, since the tests are consistently stable and seem to cap at certain speeds.
Speed tests using external servers will reflect only the slowest part of your connection, likely your internet bandwidth. To check if your Ethernet is performing optimally, try transferring files or using tools like iperf3 to another device on your network.
He mentions online connection rates, probably joking about them.
That's quite an inference? He hasn't mentioned his internet speed at all...
It's a concern when others are connected too, especially with torrents active. If only a small amount of bandwidth is available—like 20Mbit upload—it can quickly become overwhelmed and distort the data.
Internet speeds are fiber at 1000/35 Mbps. Other devices on the network handle 900-1.0 Gbps smoothly. The latest Windows update worked at 1.0 Gbps without problems. This appears to be an internal PC issue. I enabled Safe Mode with Networking, disabled non-Windows services, and turned off startup programs—still no improvement. Also tried a new user account, but the speed remained unchanged. Updated network drivers from ASUS and Intel sites didn’t resolve the problem.
I haven't attempted to reset the stack. I recommend trying those commands in sequence to see if they resolve your issue: netsh winsock reset, then ipconfig commands, followed by autotuning verification.
I resolved the problem using the SG TCP Optimizer earlier (during slower connections). After resetting to standard Windows settings, speed tests now reach 900 instantly. The key command affected this was "netsh int tcp set global autotuninglevel=normal." If it were disabled, speeds would be limited.