Bug: Performance: Group Creation Latency Unacceptably Slow

[api-Hypernova]

Describe the bug

Description:

Creating a small group on D14N staging is unacceptably slow - with response times varying widely and sometimes taking as long as 25 seconds to complete. This is a significant regression from the centralized network as well as a regression from past D14N performance.

Expected behavior

The group creation time in D14N is a significant regression from the centralized environment.

Steps to reproduce the bug

Run the following commands from libxmtp: cargo xdbg -d -b staging generate --entity identity --amount 2 --concurrency 1 # create prerequisite identities cargo xdbg -d -b staging generate --entity group --amount 1 --invite 1 --concurrency 1 # create a group with 2 member, observe slow response, repeat as desired