So I've noticed a weird freezing issue lately. Now, I'm currently unemployed, so when I'm not looking for a job, I'm playing Skyrim. Thus, I have 800+ hours logged into Skyrim. I've started a new game dozens of times and completed several playthroughs.

My issue is that lately, after I complete a certain number of quests, the game starts to freeze. Through different tests, I've finished the Main Quest, Companions, Thieves Guild, and Civil War. A freeze happens sometimes when I'm changing cells (opening doors, on a road, etc) or immediately after I fast travel and appear at my destination.

When the game freezes, all video stops and it literally freezes. Sound keeps playing, music keeps playing, but video stops and controls don't respond.

I've noticed it's not a mod issue, but here is my mod list, in load order:
The Parthurnaax Fix (Steam Workshop)
Smithing Perks Overhaul
Lore Friendly Armor pack
Enchanting freedom
Arrowsmith-Simple Fletching (Steam Workshop)
Whiterun Enchant-Rotated
Riverside Shack

It's not a computer hardware issue, because it was working fine up until about 2 weeks ago. I think it's a save game size issue, as it only happens when I've played a specific save for a while. I've uninstalled and reinstalled the game with no change.

Any ideas or fixes would be much appreciated.

The PC is a weird animal....I was having that problem (Video stuck, sound still plays) in Oblivion and took ages to find out it was a failing Power supply.

Check your fans ..clean if necessary, monitor your temps, This could just be a driver (video) getting weird.

There are some mods at Nexus that deal with save game bloat , and the like. I use the Skyrim timers mod...Cleans up a bunch of stuff.

What size are your saves? My current 277 hour character is level 51 and the save is 12 meg. <