I just had the opportunity to play LLS lunatic without any lag (school computer).
SO AWESOME! I captured Kurumi's second phase at max rank. Since you probably don't know, Kurumi's second phase at max rank is about as BS as Mystia's second non-spell card on lunatic. Through incredible luck, I got through all of stage 3 without dying (even capturing the blue spam of doom), and I only started losing lives at the BS midboss. It went downhill from there, but I still won 0/1, and most importantly...
I GOT THROUGH A WAVE OF YUKA'S FINAL ATTACK!
It was exploding, yes, but it still could have hit me, and I fit through a pixel-wide gap. THAT WAS SO COOL!
Oh, and to prove that slowdown doesn't affect me, I went through LLS extra. One death on the stage, I survived the random spam after the orb, perfected Mugetu, and only 2 deaths on Gengetu, having me clear 5/0 with no lag to give an excuse.
TILDE~