Windows 10 device has a CPU speed limit of 0.99Ghz and is stuck after reboots.
Windows 10 device has a CPU speed limit of 0.99Ghz and is stuck after reboots.
You seem to be experiencing performance issues with your ASUS K56CB laptop running an i5-3337U processor. It appears the system is automatically limiting its clock speed to 0.99Ghz after a period of inactivity, which causes noticeable slowdowns. You mentioned trying an ATK update and it resolved the issue temporarily, but the problem reappears when you don’t restart. This behavior could be related to Windows 10 forcing updates or system changes. Since you're new to forums, checking recent BIOS updates, ensuring stable power delivery, and monitoring thermal performance might help. Let me know if you'd like more details!
I performed some tests. It hit 90°C and slowed down. The issue arises when temperatures fall back to 47-50°C—it doesn’t return to minimum clock speeds and stays stuck at around 0.99Ghz unless I restart. This shouldn’t be normal. Even with underclocking it barely drops below 50°C, which suggests the problem might be broader. The laptop is quite old, and I considered replacing the thermal paste, but that likely won’t fix the throttling since the cooling is poor for a thin, lightweight build.
I understand your point. The second one runs without using the CPU, which makes it pretty ineffective. That was the issue with loading games or tests—it never exceeded 0.99Ghz and stayed limited. After updating Windows 10 to the April version, I can't reproduce this behavior anymore. I tested several games and tests for over 30 minutes, and the CPU never throttled, so it didn’t cap at 0.99Ghz either. It might be related to cooler ambient temperatures. I’ll have to wait for warmer weather to check again.
It seems more probable you were in power-saving mode at the time.
I verified the power-saving configurations and everything appears normal (performance mode). I mostly charge it directly. I’m unsure about the CPU-Z stress test results, but it was the only one available. This comes after pushing the laptop to 20 fps on a gaming session—temperatures hit around 92°C, throttled, capped at 0.99GHz, and then I waited for stabilization before running the test. The findings are puzzling: HWMonitor shows all cores at 100% while the chip reports just 5%, and Task Manager lists 55% usage. The only solution to reset clock speeds is restarting the machine.