Packet timestamp sampling latency of X550 controller

Hello,

I would like to know the  Packet timestamp sampling latency of X550 controller at different link spped.

For example in the i210 datasheet in the section 7.8.3.1 (Capture Time Stamp Mechanism) there is a table summarizing the packet timestamp sampling latency of the i210 controller.

In the X550 datasheet section 7.7.3.2 (Time Stamping Mechanism) this information is missing.

Please help find this information for the X550 controller.

Regards

Yacine