I have had similar issues, especially when using "free look" and zooming in/out of binocular view. Also severe loss of FPS in high tier battles when there are lots of planes/torpedoes present on screen. I have an Acer Predator G6 with 32GB of RAM, a GTX 1080ti with 11GB DDR (with latest drivers), and Comcast Gigabit. There was no noticeable loss of FPS prior to update 7.2. Additionally, I have noticed this issue gets progressively worse the more games that are played. This is somewhat mitigated with game restarts.