The 64-bit architecture is the hero here. By utilizing the Windows 64-bit environment, V9 R15 avoids the "bridge" issues common with older 32-bit plugins. This means:
Perhaps the most practical change in V9 R15 was the introduction of the Waves License Center Hardware Independence Waves All Plugins Bundle V9 R15 Windows 64 Bit
High-quality plugins, extensive collection, user-friendly interfaces, good compatibility, and reliable updates and support. The 64-bit architecture is the hero here