CRTL+f and BMs stances

[Velast]

noticed that when we are farming bosses in bsh24 and theres a lot of bms using their sword stances it freezes me for 5-10 sec. my class is kfm and im using crtl+f when we are zerging bosses. i wonder why their stances are seen through crtl+f? other classes skills invisible so bms stance is a skill itself but its visible Kappa mby camera distance zoom over 400+ can help with this frezes or not a chance?