A method and apparatus for optimizing read operations during a control sync operation on a data storage device are disclosed. The data storage device contains a management table used for mapping memory addresses to a non-volatile memory. A control sync operation makes a copy of the management table to the non-volatile memory. The control sync operation is non-blocking—the sync operation allows read and write operations in parallel with making a copy of or updating the management table. During the control sync operation, the read operations are optimized through a CUQ and an overlap range table. The CUQ may act as a temporary management table while also containing updates to be consolidated to the management table. The overlap range table is used to allow skipping searches within the CUQ by identifying then mapping entries that reside within CUQ.