In sub-band discriminator the cutoff values for PQMF are set as follows:
N=2: 0.25
N=4: 0.13
N=16: 0.03
N=64: 0.1

For good reconstruction with 64 subbands the optimal cutoff is closer to 0.01.
Is it purposely set to 0.1 or a possible typo by the authors?