diff --git a/config/comCam/finalize_characterization.py b/config/comCam/finalize_characterization.py
index cb247b24..53c64018 100644
--- a/config/comCam/finalize_characterization.py
+++ b/config/comCam/finalize_characterization.py
@@ -4,3 +4,6 @@
 config.psf_determiner['piff'].spatialOrder = 4
 # See DM-48887 for more detail.
 config.psf_determiner['piff'].zerothOrderInterpNotEnoughStars = True
+# See DM-49152 for more detail.
+config.psf_determiner['piff'].piffBasisPolynomialSolver = "cpp"
+config.psf_determiner['piff'].piffPixelGridFitCenter = False