[ISSUE #9451]Optimize back pressure default value to 1024.

[GenerousMan]

Which Issue(s) This PR Fixes

Fixes #9451

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.99%. Comparing base (9d9431d) to head (8d0fcbb).
⚠️ Report is 242 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #9452      +/-   ##
=============================================
- Coverage      48.15%   47.99%   -0.17%     
+ Complexity     12017    11974      -43     
=============================================
  Files           1308     1308              
  Lines          92166    92166              
  Branches       11789    11789              
=============================================
- Hits           44387    44234     -153     
- Misses         42294    42430     +136     
- Partials        5485     5502      +17     

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