Big thanks to for his work in the other question and for leading me towards WPRUI and WPA. Redshift 3.5.20 is available for Windows 10, glibc 2.17+ Linux and macOS 12.6/. Could you: 1) Explain what ntoskml.exe is. I have also searched in the SuperUser Website but I can't find a solution. I thought I'd type this up since I spent so much time researching the problem. A lot of other people have been having the same problem, but it was either high CPU or Memory usage. Since it's a laptop and I'm not likely to use the wired NIC anytime, I just disabled it in Device Manager, and the problem stopped immediately. Updating to the latest drivers from Dell didn't help. Looking up that driver, it was for the onboard NIC (Realtek). I drilled down the CPU spikes through ntoskrnl.exe -> ndis.sys -> rt640圆4.sys. Following what magicandre1981 did in the other thread, I used WPRUI to capture the activity and opened it in WPA. Observing Task Manager during these lockups, 'System and compressed memory' would be the only thing spiking and would reach about 25% before returning to a negligible level. I tried to follow What is the cause of a high CPU usage of 'system and compressed memory' in Windows 10? because the symptoms were similar, but the root cause was different. After a random amount of time after reboot (20 minutes to 2 hours), my laptop would have considerable lag, locking up for 2-3 seconds every 6-10 seconds.