PC rendering performance has dropped significantly

Hello, I bought a new gaming computer 5 months ago. At first, After Effects and Premiere worked perfectly, but before the second month was over, After Effects and Premiere started to perform poorly. Even standard videos would freeze during pre-rendering, and packages I downloaded from Envato would freeze in Premiere. I was able to run these packages quite stably on the office PC with a 3060 and 11400F. The main comparison is this: on the day I first got it, I rendered a video with lots of effects in After Effects in just 7 minutes, but now when I try to render the same file, it shows 40 minutes and is much slower than before. Sometimes it doesn't render at all or freezes with various errors. This also applies to Premiere. Because of this, I can't work at home right now. I tried formatting the system, but it didn't help. I updated Windows and Adobe, but nothing changed. This is really frustrating me. When I contacted the place where I bought the system, they said I need to bring it in for them to look at it. I'm sure if I take it there, they'll just send it back saying there's no problem because I haven't experienced any issues with gaming performance. I'm also attaching a screenshot of the PC's specifications here. I'm waiting for your suggestions; I need help. Thank you very much.

I bought another one of the same RAM, so I have two now, making it a 32 GB system.