Main machine - Intel 9960X, 128gb Ram, W10 Pro high performance with all bluetooth and wifi disabled in device manager, intel x550 network card connected directly (ie no switch). 128 ASIO buffer, and 2 buffers additional in the one connected vienna instance. Running Nuendo 10, latest version. Connected to....
New Slave machine - AMD 3950X, 128GB Ram, Corsair PCIE4 NVME system and samples drive. Vepro 7 latest version.
I keep getting intermittent audio dropouts, about one every 30 seconds or so. If I bus the audio back to a group and to an audio track and print it, I can see that the audio literally just cuts out. Here's the funny thing though - it's always exactly 128 samples. I tried dropping down to 64 buffer just to see if it increased and the frequency of them didn't but the length oocasionaly was a multiple of 128, eg 512 samples dropout. Always a multiple of 128.
The dropouts seem to disappear if I go up to 512, but then the latency is 20ms and unacceptable, and besides, we're talking about one patch on one slave.
On the ethernet connections - I tried turning off interrupt moderation, which changed nothing, but even with that disabled changing the interrupt moderation rate to extreme increased the number of these dropouts. Jumbo frames currently disabled.
I know it's not performance based because there's plenty - tons - of CPU and RAM, disk and ethernet bandwidth on both ends. The fact the dropouts are precisely one buffer long seems to be a clue. There is no switch involved but the same happens if I use a switch, incidentally...
