[SPIKE]: Investigate "PaymentFormsController#show" speed

From: #4918 (comment 1142253500)

Problem

PaymentFormsController#show fails to meet it's apdex requirements 70% of the time.

Context

PaymentFormsController#show is currently set at :default urgency. This means it will fail apdex if requests take longer than 1 second. Reference

On average, these requests are taking longer than 1 second 70% of the time: Screen_Shot_2022-10-19_at_3.13.25_PM

Results

  1. Find way to optimize endpoint so requests take less than 1 second.
  2. If not possible, decrease the urgency so we allow up to 5s.
Edited by Bishwa Hang Rai