Discrepancy in timecode on app between screens

Greetings everyone… I’m new to Tentacle Sync forums and just recently purchased one.
I’ve noticed on the first screen below the timecode is accurate. On the second screen (Device Setup) its off by 2 to 6 frames. At first I was concerned by this because I was looking at the second screen and wondering why it was always off even when the TS-C slate was reading directly TC generated from the connected Tentacle Sync.

Is this a glitch in the app or am I doing something wrong? At first I thought it was just screen or bluetooth latency but the app is faster.

Edited question