[mgoorevich]

Well if you do professionally ADR your system must have a reference sync and be genlocked by a single Black Burst generator.
Other wise each time you'll press playback your sync will start / play different.
To be frame edge accurate you got to have a Sync HD unit and Aja IO XT (for using with a newer Mac Pro).
You'll need also to pick up an Aja GEN10 which will generate HD tri-level sync and feed your Sync HD and Aja IO XT.

You will need to get a Syncheck (discontinued) or Catching Sync app for iOS in order to measure the offset in Pro Tools to compensate the latency of your LCD screen.