game frame rate issue with big card collection item

[darth dooku the 3rd]

i love to display cards in biggest one, issue is i got 18 biggest card displays (ones where you dont sell but show them off) and they mostly got cards in it and when ever i look at them my frame rate drop and i get lagg also ? if i dont look at them my frames seem fine. i assume big card collector displays wast meant to be this many in shop as guess.