Hi all,
I also have big problems with the synchronous pianos, impossible to use the different microphones as I should normally be able to do. I use the Vienna Ensemble. I have a very powerful PC since it is also used for gaming, and I have no problem with games: AMD Ryzen 9 5900x / 64GB Ram. I have already made the settings proposed in other posts to improve things, but as soon as I put 4 or 5 microphones, the CPU is overloaded. There are major optimization issues.