Please view attached image. (**undocumented is that a Nexus 9k lives between the ASA and the "server".)
1. What might be the cause of the illustrated symptom?
2. Could this symptom be caused by the MSS inconsistency =1380 outbound vs.1460 inbound?
3. Could this symptom be caused by some kind of deep packet inspection? If so, how can I determine that?
Maybe this is relevant (I'm reading it right now) --Cisco ASA TCP State Bypass | Blue Network Security (bluenetsec.com)