Prior to deployment of Section Editing, The Product Manager, Designer and QA will make sure the feature is appears and operates as expected.
To see the real speed benefits of section editing, we may need to test long articles on entry-level devices. Here are recordings of a stark difference, editing United States on the (entry-level) Xiaomi Redmi 6A.
- Without section editing, fast typing causes a multi-second lag:
- With section editing, fast typing does not cause a lag:
In reference to @dchan's mention of the differing levels of impact testing longer articles has on on entry-level vs. faster devices, compare, the lack of a significant difference in lag between the recordings below (iPhone 7+) to the stark difference in lag demonstrated in the recordings above (Xiaomi Redmi 6A).
Without Section Editing | fast typing | iPhone 7+:
With Section Editing | fast typing | iPhone 7+: