I'm experiencing that as well, 2 months ago 25mans are np with max aoe with max spell detail etc etc.

Nowadays i always dread going into 25 mans fearing of dcs and for some reason have to reduce visuals to reduce spikes.... and that's bad since i need to tank nowadays... imagine tanking 10s of adds then suddenly dc... oh the horrors! not to mention the mood swings 350ms -> 1500ms -> 1000ms -> 8000ms -> 200ms and so on and so forth

streamyx line has deteriorated since last month. no idea if it's related to cable damage w/e