Yes it is accepted it with the speaker set, but when i put the new settings on asound.conf it rollback to the defaults one. Maybe it can be a driver limitation? The weird thing thing is that on after reboot the driver starts at 2048 period_size and the then goes to 4096. Weird.
I have to edit here. It is fixed by putting only the buffer size and not the period size. It is now stable at 2048 period_size. Thank you very much for the help.
Having issues with your DietPi installation or found a bug? Post it here.