Here is what I measured :
From here we can say that
- Row 3 adds latency (2.67ms) if used with blocks
- FXLoops add latency (1,85ms) due to the Analog to digital conversion when using the Return.
- An FXLoop on Row 3 is the latency super-bundle (7.19ms)
These measurements are done with either a Gain Block OR an FXLoop Block, not both at the same time and with no other Block on the chain.