Max ESP node that can be synced

I would like to know how much ESP node (I use esp8266) is it possible to synchronize with WLED ?
I have create an autonomous portable light to be used by a dance company and would like to build 20 of them (one light per dancer on stage).
All the lights needs to be synchronized. Only basic color and maybe some FX like strobe if that works.
I will use a private wifi network only for that.

I run 12 without any problems.


Hi, tks for the reply. 12 is already a big step.
Sounds like the only limitation would be the network and the router and how it can handle high number of devices.