I noticed this particularly in V12N. The others did not seem to be as affected. I’ll probably monitor my FPS next time I run them to see if the V9, V10, And V11 have similar drops, but I know V12N was dropping me by several frames. I wondered if it was the arena, because (spoiler tag for those who haven’t made it to V12N yet)—
The instanced arena prior to the fight also had me dropping to ~45 FPS; I play with frames capped to 60, Borderless Window, GTX 970M, and I typically don’t have many other programs up to eat up resources when I’m playing (basically just Discord most of the time). Perhaps it’s just my graphics card is showing its limitations finally, but the only other area where I’ve experienced FPS drops is in UwU during some of the phase transitions, and that was shared with my raid mates... all of whom have better cards than I do.
So... I’m not sure. It may just be v12’s arena for some reason.