The performance drops throughout the day or during overnight use. The problem might be related to AVG.
The performance drops throughout the day or during overnight use. The problem might be related to AVG.
My PC feels quite heavy. It slows down a lot after long periods or extended use. The only solution seems to be turning it off and on again. Once restarted, it runs much faster. The issue began while using Lightroom Classic. I’m not sure if it’s connected. Even after shutting down Lightroom, closing all Adobe-related apps, it still feels extremely slow—hard to do anything. Lightroom Classic is so sluggish it’s almost unusable, and Firefox doesn’t help either. My system runs Windows 11 Pro, Intel I911900K, not overclocked, CPU stays cool thanks to a Noctua cooler, keeping temperatures around 60°C or slightly higher, never overheating. I’ve used a 64GB Corsair RAM at XMP speed, and the ROG MAXIMUS XIII HERO (LGA1200) with GeForce RTX 3090—no overheating detected.
Recent updates to hardware and software have been made. You've increased RAM to four sticks and tested using two sticks from the same kit. It seems you're monitoring GPU hotspots rather than just average temperatures, as they remain stable despite performance drops.
No recent updates were made. Everything remains consistent—same drivers, same Windows version, everything unchanged. I installed the NVidia drivers a while back as NVidia driver 546.65, but didn’t test the newest releases. Those actually helped; Lightroom ran smoother and Lightroom Classic became responsive when switching images. Now it feels like progress is slow. I’m planning to check Firefox too to see if it also lags. I even tried the latest Lightroom version, but only tested Firefox recently—now it’s lighting up quickly. Lightroom Classic, however, remains extremely sluggish.
I haven’t verified temperatures post-restart. The system boots quickly now, but I haven’t had time to check each stick separately. Maybe testing them individually will help. I’m worried it might be the RAM issue. The odd part is it remains sluggish even after closing all programs—only a restart fixes it.
It might cause a crash into a low-power state and not return to a normal operating mode. This could relate to the scheduler or Windows 11 issues. A simple fix would be switching to a different power plan—Balanced or High Performance—using the alternative one.
I turned off power-saving mode. I wasn’t familiar with C-state or P-state, but I thought Windows might be the issue too. After rebooting, Lightroom Classic loaded quickly—everything appeared correctly while other programs like Steam and Skype started up simultaneously. When I tried to launch it again, it ran extremely slowly. The CPU temperatures look normal, though they vary a bit. This happened after the system restart.
C-states are energy-saving modes used for efficiency; your CPU supports them, PCIe does too. If your Windows Power Plan hasn’t been adjusted yet, I suggest checking it. It seems the plan you’re using in Windows 11 might not be optimized for a 11900k processor, which is three generations behind now. Switching to Balanced or High Performance could resolve issues and improve stability. This might also depend on your UEFI/BIOS version, as Windows 11 interacts with C-state management.
It looks like you just mentioned adding screenshots. You clarified that power saving is turned off and set to High Performance. This was done a while back, before any problems occurred. It’s one of the initial steps I take when setting up a new PC.
Testing would provide useful insights and benchmarks during low performance episodes. Tools like HWinfo64 and Cinebench R23 can help identify issues. If performance doesn't reach full speed, it may indicate a C-state lock. The most effective way to disable low-power modes is through the UEFI settings. Depending on the cause of slowdowns—CPU or GPU, or PCIe—low power states often occur when systems switch to PCIe version 1.1 for efficiency. Avoiding thermal throttling is key, as it points to a C-state rather than high-speed boosting.
Have you checked returning to Balanced to identify any recurring problems since they began? That’s the idea I’m proposing. It might be related to the High Performance Power Plan on Windows 11, your CPU and motherboard pairing, and the UEFI version.