How to characterize the delay between two reliable messages of 64 bytes ?

[PaulGui]

Hi community !
All is in the title.

The latency between sending the message and receiving the callback is not stable ( between 1600 & 4300 ms)
I know that this delay is here to be sure that every devices in a group get the entire message but is there a way to calculate it ?

Sincerely

PG

[PaulGui]

Hi !

I think i got the point of my problem. when i send an unsegmented messgae, the TID value is actualize (+1 every time). But, with the same code, when i send a segmented one, the TID value is always 27.
But the problem is i don't know where this value come from and how could this be corrected.
Do you know how to correct this ?

Best regards

[Edvin]

again, I am no mesh expert. So where do you get this TID, and do you know what it is short for? Transaction ID? Where is it set to 27?