Performance issues using FIFO as inventory model for manufacturing company in AX2012

Hi

As an international manufacturing company with 40+ plants we want to roll out AX2012 R2 with FIFO as inventory model but due to performance problems we have experienced with using the FIFO model within a couple of plants using AX2009 during the periodic inventory closing (recalculation) we have some doubts if this will be the right choice.

The main reason we want to choose for the FIFO method instead of standard cost is due to the fluctuation of our raw material prices which are a major cost driver.

Does anybody have experiences with similar performance issues with running the periodic inventory closure in AX2012? Perhaps you can share thoughts about possible solutions

Besides that I would be very interested to get in contact with somebody who has experiences with running the FIFO inventory model with AX2012 in a manufacturing environment with multiple (international) plants.

Thanks in advance for any feedback.