I have been having issues where i was sometimes getting some massive FPS drops when hit by certain abilities (since the new patch (11.1.5)) and have found the cause and temporary fix for the issue.
I’m not sure if it happens on all classes but when hit by a silence ability and the “Single-Button Assistant” is on my bars, for the entire duration of the silence my FPS drops insanely low.
It would seems the button is trying to recalculate what to do while silenced and tanks the FPS into the ground.
As of right night my only fix to this has been either to live through it or take the button off of my action bars and the lag stops.
I have noticed similarly that in general once I have the SBA on my frame rate drops, even in the open world.