Connection lost using tethering

I have this issue TeamSpeak version 3.5.2, it basically keeps on losing connection, most of the times. I don’t know if this issue is related to my connection via tethering or so.
I crash like after 10 min sometimes, 15 min. after that is give me written in red failed to connect to server. likely for me sometime is just for few minutes like 4-5 min. But others times is more than 15-30 min. I tried contact my provider saying that I have this issues he reassure me that my connection is just working fine and he told me that he doesn’t know where the issues is.
So I don’t know what else to do, could you please help me out?