I just installed N6.5 (64 bit) on Win 7(64 bit) today. Running through a test project, I am getting ASIO overloads where playback pauses for a bit, the Average Performance Level meter spikes to 100% hard (for anywhere for 1 to 10 seconds), than Nuendo recovers.
The same project on 6.07, and same machine has 0 playback issues.
My signature should show all my specs. Any advice on tracking this issue would be greatly appreciated.