I have 60g link with 150cm dish and ofset 120cm
The signal strength is between 80 and 100 percent
On rain and the bad weather is always the same flow and signal strength..
but when I’m doing the bandwith-test, I have constant breaks and disconecting the connection.
You are maxing out the CPU as it is not strong enough to generate the traffic and also pass it. And that bandwidth test only runs on a single core on multi-core CPU’s. Use iperf between 2 pc’s instead.
It is a known fact. Mikrotik has already removed the .exe from their down load page and I am surprised it has not been removed from rOS already. And it hasn’t ever been proper to test to/from the device(s) you want to test.