This skips a potentially costly loop if volume is 100% or 0%, as for former there is no need for volume adjustment, while latter can be solved by specifying a AUDCLNT_BUFFERFLAGS_SILENT flag
This skips a potentially costly loop if volume is 100% or 0%, as for former there is no need for volume adjustment, while latter can be solved by specifying a AUDCLNT_BUFFERFLAGS_SILENT flag