When ever I play more than 1 table my VIP% drops down to 10 or 12%. But then I am ultra tight and carefull anyway, even when I'm playing poker (not just the cards) I am only getting up to a massive 18%-20% of hands played!
I play mainly on pacifc against the fish and donks, so there is no need to really play anything but great hands because they just donate the $$ to you without even realising this is the first hand you played in 1 hr.
I certainly wouldn't be playing JT if I am multi-tabling. I would just play AA-44 AK, AJs, KQ-KTs. folding all other junk such as QJ, T9s ATo. etc.