Improved FPS and increased frame drops after patch?

Hi everyone, I haven't played in about a week, but immediately after patching, I noticed that I was getting way better frames and performance than usual. It was really nice until I started also getting huge frame drops at random. My screen will freeze for about 1 or 2 seconds, which has never happened to me before. My graphics settings are the same as before, nothing seemed to change there. Was there anything changed that might be causing this? Sometimes I get frame drops in WvW fights, but I'll also get them while doing nothing, or opening my inventory, which is unusual for my computer.

Running Intel Core i7 7700k, GTX 1060, 16 gb ram. Again, frame rating to zero has never happened until I patched today, and now its frequent.