My new mechanical keyboard types double letters randomly—could it be software or hardware?

I recently switched to a new mechanical keyboard (a compact 65% layout with Cherry MX Browns) for my home office setup. At first, everything felt great, but after a couple of days, I started noticing random double letters appearing when I type fast - like "heelllo" or "committ". I’ve tried cleaning under the keys and updating my keyboard firmware, but the issue persists. I’m using it on a Windows 11 PC and have also tested it on my laptop, where the problem shows up too. I’m wondering if this could be a hardware debounce problem or maybe some software glitch in Windows keyboard drivers? Has anyone experienced similar random repeated key presses with mechanical keyboards? Also, are there any diagnostic tools or tricks I can try to isolate whether it’s definitely the keyboard hardware or something on the OS side?