CHICAGO–(BUSINESS WIRE)–Fitch Ratings has affirmed 16 classes of Credit Suisse USA CSAIL 2015-C1 Commercial Mortgage Pass-Through Certificates. A detailed list of rating actions follows at the end of this release. KEY RATING DRIVERS The affirmations are based on the stable performance of the underlying collateral and no material changes to the pool metrics since issuance. As of the November 2016 remittance, the transaction has experienced 0.8% collateral reduction as a result of amortization.