I've measured Ultralite MK5 resulting latency in Logic Pro.
This is not RTL and it's useful for people needing to work in the box with virtual instruments, the larger the latency the wider is the delta between hitting a key and hearing a sound.
Motu Ultralite MK5 Resulting latency:
12,2 ms Roundtrip (6,0 ms output)
Buffer 128 samples
No MOTU drivers
Connected using the thunderbolt4 port of a Mac Mini M2
running Logic Pro 10.7.9
With Motu drivers the numbers improved to:
6,9 ms Roundtrip (3,4 ms output)
Buffer 128 samples
Motu drivers
To give you a comparison same set up with a Presonus Quantum2 gave these results:
Presonus Quantum2 Resulting latency:
6,3 ms roundtrip (3,3 output)
Buffer 128 samples
Connected using the thunderbolt4 port of a Mac Mini M2
running Logic Pro 10.7.9