Massive framerate drop after latest patch

[Taurmin]

For as long as i can remember Warframe has consistently been capping out at 100 FPS or 2-300 FPS without vsync, atleast inside the Liset. However after the recent Recurring Nightmares patch my average framerate in the Liset suddenly dropped to 25.

My key system specs are as follow:

Processor                                         Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, 4001 Mhz, 4 Core(s), 8 Logical Processor(s)
Installed Physical Memory (RAM)    16.0 GB
Display device                                  NVIDIA GeForce GTX 1080
VRAM                                               8.0 GB

Should be more than beefy eanough to handle anything Warframe can throw at me, and everything was fine and dandy when i played earlier this week.

[Taurmin]

Oddly switching between fullscreen and borderless window seems to have restored my normal framerate...

[Lagsquar3]

Thank you, I've been having the same problem for weeks

(Sorry for my english) 

[K0bra]

I have the same problem.Only solution was disabling Physx.

[Sappir]

I'm not sure whats causing it either but I have the same issue. It started the recent patch for me too.

Idk what you guys did but this patch fixed it xD Thanks DE

Edited November 4, 2016 by Sappir

[White_Matter]

I'm having a similar issue with 1060. I was able to run the game without any significant fps drops with a 670 gtx last week.