Netflix low streaming

Hello guys and thank you all for the great work.
I have a TVbox H96 Pro+ (Amlogic S912).
I use micro SD with CoreELEC Kodi 18 rc4.
I installed the Netflix addon, which I regularly access from a Premium subscription.
Unfortunately, the vision is interrupted continuously during video reproduction.
I use a 4G wi-fi connection, which also reaches 50mega in download.
I also tried with Express VPN without improvements.
I precise that the same connection makes me run Netflix without problems on the native smart TV app and Android app.
I think I have to set something up on kodi, like setting buffers etc etc., but I’m not able.
Sorry if I’ve been long and Sorry for my terrible English (I’m Italian).
Thank you for your time.

Try a lower resolution