When holding iron bars in hand, placing them in the world or dropping them as an item the framerate drops a lot. The beta runs between 15-20fps on my computer but just holding iron bars causes it to drop to 2.5fps. Placing 6 iron bars also reduced the framerate to 2fps in that area. Turning ray tracing on and off seams to have no affect.
Thank you for your report!
We're actually already tracking this issue at MCPE-69365, so I will resolve and link this ticket as a duplicate.
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