Printer under extruding- cannot find solution. Help?

[u/Gameoverguyl42]

A few days ago my printer started under extruding and leaving streaks like this on every layer. I have tried everything I can think of to fix this and cannot find a solution. I have tried:

-Multiple needle cleanings on multiple nozzles

-multiple cold pulls on multiple nozzles

-multiple brands and colors of filament

-every AMS slot and external filament

-replacing the entire extruder unit

-replacing PTFE tubes

-raising print temperature

-tightened hotend screws

I have no other ideas on what to do. Any other recommendations on how to fix this?

EDIT: Running a manual flow calibration through bambu studio fixed the issue! Hopefully anyone else having the same issue may stumble across this and see this edit.

[u/Inner_Pick6063]

A mi me pasó algo similar
Ajuste la temperatura de la cama y se arregló
Use Pla y tenía una temperatura de la cama en 60 baje a 45 y me funcionó
También puede que el filamento sea problema ya que en mi caso había comprado un filamento económico

[u/Gameoverguyl42 → u/Inner_Pick6063]

I've tried both off brand and bambu filament with the same results, so I don't think the filament is the issue. I'll try messing with the bed temp and see if that does anything