I have interactive cloth and all that stuff. Smoke looked the same... Regardless, the particles were the only thing I actually noticed even if there was other stuff going on.
Enjoy the PhysX while it's relevant. :p Pretty soon all devs will be using ACE on AMD cards/PS4 for physics.
Core i7 5820K hexa-core @ 4.4 GHz | 16 GBs 2400 MHz DDR4 | Dual MSI GTX 970s | Dual 128 GB SSDs