Investigate Signed API failures

[Siegrift]

From the logs we can see that fetching data from Signed APIs often times out.

The calls are staggered, but the timeout errors timestamps suggest that the staggering does not work (often the difference is a few milliseconds). It's possible this is just event loop batching - but that would suggest that Airseeker is "overworked". Another explanation is a bug in code - but the logic LGTM.

[Siegrift]

It is confirmed performance issue. See this.

It has been confirmed that re-deploying Airseeker with less chains works as expected and there are very little failures.