My file decided to be 'Userist' and not work for me. Every time I try to make a move, it freezes. Before this happened, I decreased the poly count to almost half of what it was before. After that, things started taking a long time to load. Even small operations like splitting an edge took about 2 minutes to actually be performed. So, all I can do is submit the model as it last was

By the way, does anyone know what could be causing this?