When I asked Sammy about the number of fields that we can play at once, this was his reply:
(it’s alright, I asked him if I can share this and he said that is ok; Many Thanks, Sammy 
)
@Maoshan_Wanderer I hope it’s OK that I posted here?
I searched for a good topic to share this, and I decided to revive this Thread (but it’s not mine, that’s why I’m asking you).