Why is my 14 inch M3 Pro all of a sudden feeling like an old HP laptop after installing sequoia 15.3?

I bought my m3 pro (18gb Memory, 1tb ssd) about a year ago now. It’s been super snappy up until the past couple weeks now… Now all of a sudden, I am getting huge stutters. I cannot even type an email without my type box freezing up after every few characters inputed. The whole system is slower too. It feels like somebody swapped out my M3 Pro with an old Intel Mac I am heavily leaning towards MacOS 15.3 being the culprit. The problems started around the time I updated to that version, and I pretty much only use my Mac for my college work via Microsoft Office apps. I haven’t downloaded anything in months, nor have I visited any sketchy websites, thus I am ruling out any malware causing my problems. It is not memory causing it either from what I can tell. My activity monitor shows green memory pressure with it still happening. Is anyone else experiencing something similar?