I fought an S Ranked yesterday and saw the boss just fine...but it was like 50 people versus 100. And I had to basically faceroll my keyboard because I was lagging so bad. I'm not sure if they've already tried, but they need to seriously dumb down Particles and Models when there are many of them actively fighting. I could have sworn they did this with Behemoth as there's a huge difference when I fought him a year ago (couldn't see him, was a lag fest) and when I fought him a couple of weeks ago (saw him entire time, little lag).