I have started using the Basic ZeroTier service. I have a server and clients that are on a zeroTier network. I have TLS connections between server and clients. The clients push heartbeat messages a few times every minute. I have no issues If I connect 3 client devices and a server. But If I add more clients, it simply cannot keep the connection. The 4th connection basically switches back and forth with the 3rd client.
My question is, is there a limit on how many clients can be active in each network? Is there a bandwidth limit on Basic service? If I upgrade to Professional, would it help increase available bandwidth?