Priority of KNX Telegram

I’m using OR connected with KNX Bus. I found out, that at least one device has a problem with the priority of the KNX telegram which is HIGH.
I can not receive the status of a Siemens Dimmer N527 with the HIGH priority of the telegrams. By using different Apps and bus monitoring I can see that a LOW priority of the telegrams always works perfect. How can I change the priority of KNX telegrams?