I'm back to having bad performance. I'm in the 20s again.
I'm also getting a sound-looping issue but it usually don't crash after looping 4 or 5 times.
Edit: Ignore the 0 in the screenshot. The framerate was around 22-23. I'm not sure why the 0 showed up.
So, yesterday, before buying my house I was in the 40-50 range most of the time. Now I'm in the 20 range after buying my house. I have the same car. Not a lot going on in this screenshot either.