In RB the path to Latency Adjust app is 'Prefs - MIDI - MIDI Devices - Adjust Latency button' (not text box).
If it truly wanders I'd offer two possibilities.
The Tempo changed somewhere along the line (maybe BiaB vs RB).
or maybe
The Bit Rate being used by the two programs is different.
While chasing this problem I have lost my Sample Tank Drum sounds(and all other ST sounds) all together. Until I find them ??? I will not be able to fix the situation, as the drum sounds now are coyote wave table sounds, not the ones I want to use.