PLEASE HELP!! Installations of Windows 10 and 11 all Lagging and Hanging after a small amount of use

[Microsoft Windows]

Hi, for the past several days ive been stuck trying to fix the stuttering, lagging, and occasional crashing on both Windows 10 and 11, it first started when I attempted to revert to Windows 10, cause I bought this custom build PC from a close friend abt a month or so ago with Windows 11 already installed on it and upgraded to two SSDs day before yesterday, I made sure both ssds were connecting and registering to the system (they both still do) and my OS was runnin smooth as silk, and my friend recommended i convert to Windows 10 since i had the extra ssd now and Windows 10 is less resource dem

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