System performance is decreasing due to internet usage.
System performance is decreasing due to internet usage.
Hi, I've experienced this problem for several weeks and it has become more severe. Web pages load very slowly—sometimes taking up to 20 seconds. It's hard to identify the exact cause, but my PC slows down when connected to the network. I've run speed tests and everything looks normal. Both WiFi and Ethernet are affected, so the issue seems to be on the computer itself. I've used Windows Defender and Malwarebytes, but nothing appears. Recently, I added a NVMe drive and changed the RAM from 4x8GB to 2x16GB. I removed the NVMe after suspecting it was using too many PCIe lanes, but that didn't resolve it. In Task Manager, no network activity is showing up, which is unusual. I'm looking for guidance to help me troubleshoot before proceeding with any changes. My system specs are: MSI PRO Z-790 DDR4, WiFi 1080ti, Intel Core i5 13600k, and a 4070ti Super 32GB DDR4.
Websites often take a while to load, but sometimes the delay comes from DNS resolution rather than network speed. Since speed tests are typical, it’s likely the DNS server is the bottleneck. If you’re using your ISP’s DNS, consider switching to alternatives like 1.1.1.1 (Cloudflare), 8.8.8.8/8.8.4.4 (Google) or 9.9.9.9 (Quad9). Your ISP’s DNS might be experiencing issues coinciding with your hardware change, unrelated to the problem. For more details, run ipconfig /displaydns and check its output.
I believe the issue was caused by an incorrect DNS entry. After checking, most of the sites returned were unrelated to the intended domain. Switching to Google DNS has helped, though it’s still a bit slower. To resolve this, you can reset your DNS settings or manually update them to point only to the correct server.
I modified the content to clarify the changes and explain the connection goals. The test aims to verify if unauthorized access occurs when a site connects automatically. This helps identify potential DNS hijacking risks.
The output shows what happens when you run ipconfig /displaydns. It helps me suspect this might be the problem. I haven’t been taken to any websites. I switched my DNS to 8.8.8.8 via Control Panel → Network and Internet → Network Connections, using TCP/IPv4 settings. After installing a new modem/router yesterday, it doesn’t use a default password. I’m sorry if I seem clueless about networking—I’m not very familiar with it.
Using Malwarebytes Anti-Malware might assist. If you have any critical details about your device—such as email or banking access—I’d suggest backing up data and then reinstalling Windows. A complete system wipe could be the safest choice. This process requires effort, but safeguarding such important information is essential. Have a great day!