ID:15098 Can't implement PLL "<name>" with speed grade of target device -- PLL "<name>" may be implemented with faster speed grade

CAUSE: You specified a speed grade of a target device for the specified PLL; however, the Quartus Prime software cannot implement the specified PLL with the current speed grade. The specified PLL may be implemented with a faster speed grade.

ACTION: Change the speed grade of the target device to a faster speed grade, or modify the PLL so that it can be used with the speed grade of the target device.