What is the latency introduced by SmartLink in addition to any link latency? For example, the Opus codec introduces a minimum of 25 ms delay; what else is introducing software delays and by how much? How about encryption delays?
It's very simple- the codec alone introduces at least 25 ms. Encryption when done right is computationally expensive and requires hardware acceleration. It is important to understand what's been inserted in the SL chain and the resulting delay/latency.