Premium Card framerateissue?

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Premium Card framerateissue?

So I've managed to compose a deck made entirely of Premium Cards, which is rather easy now with Meteorite Powder Introduced.
However I find that I have some framerate issues when using said deck. It specifically occurs when premium cards are MOVING across the board, when nothing is happening everything appears just fine.
I have a very good setup (GTX 1070, 8 GB ram etc etc), so I can only assume that this is an optimization issue? Or is there anything I can do on my end to fix this?
 
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