Please can you use the Show Timestamp option so we know how often these messages appear. Please turn off confirmed uplink, it’s a burden on the gateway as it has to transmit, rendering it deaf to other uplinks at that time.
I’m not sure what all the other TX & RX activity is that is woven in to the two confirmed uplink sending lines - can you give us the url of the code base you are using.
The simplest code to start would be using ABP if you could configure for that as well.
Finally, please, no screen shots for text that can be copied & pasted, it stops us copying it in to other tools for analysis. See How do I format my forum post? [HowTo]