I have a fairly fast Dell XPS computer with 16GB RAM, 1GB SSD, 2TB hard drive, NVIDIA RTS graphics card, all running Win 11. It is running very slowly, taking measurable seconds to respond to Archicad instructions such turning on, and turning off marquees, selecting library parts, etc, etc. I have 783GB of spare space on my SSD and 1.72TB left on my hard drive. The project I am working on is a small house extension.
Even if your project is small, if the project management is poor it can kill the performance. There is a very comprehensive guide on how to optimize the project performance on Community here: How to Optimize Your Project Performance