Extreme performance issues since patch 1.5

[jamie.lachance]

Hi, I'm posting here because I've seen this issue reported in many places but found no fixes. I don't see a report on it here either. Since patch 1.5 has gone live, I've been experiencing extreme stuttering and outright freezes to the point where the game is unplayable. Some have reported an improvement after updating their graphics card or reinstalling it. Neither has worked for me.

[jamie.lachance]

Here is what I've found after some testing:

1. When I start and load a save, the game works perfectly for 1-2 minutes.

2. Then the game freezes for 10 or so seconds.

3. I then have massive frame drops for the next several minutes.

4. After about 10 minutes of gameplay, performance seems to return to normal.