This started a few days ago. My game was running fine for weeks and completely stable with my mods. This weekend it started to freeze every 30 to 40 seconds, sit for about a minute, and then unfreeze and continue. This happens in any location, indoors or out. I had not made any mod changes prior to this happening. I have even turned off all of my mods (which are all armor mods anyway), and this still happens. It will even freeze up when I am in the game menu.

What's your graphics card and which driver are you using?