PMCC always fails on Drizzled images. PMCC should ask if the image was Drizzled (DrizzleIntegration) and by how much in the Image Parameters section. I can get PMCC to solve if I take into account the Drizzle Scale.
Example: My sensor pixel size is 6.54. If I Drizzle by 2x and half (1/2) the Pixel Size (3.27) PMCC will always solve.