No, remember Shen saying in twnty days she didn't have enough time to compare some fibers. She did nothing for twenty days after looking at the fibers under the microscope. And the defense didn't even get access to most of the evidence until the trial was under way. It is a prosecution stall strategy.
But regarding the speedy trial, once defense realizes LE is falsifying evidence, every day that passes is another day that prosecution can use to fabricate or destroy evidence as necessary, and get their story straight, and eliminate inconsitencies. Once the evidence is disclosed, it is frozen, and they can't alter it anymore because it is a matter of public record.
In the movie business, they have a "continuity coordinator".
Somebody that makes sure the action looks the same from scene to scene: A lime in the bar isn't a lemon on the next days shot, scars on the left side of the villian's face doesn't move to the right side.
The SD DA's office needs one of them.