Environment
WACUP 1.99.53.24784 (x86), post-release updates applied
Windows 11 25H2
Skin: Big Bento Modern
Problem
With "Not So Direct v1.15" configured as the output plugin (DirectSound configuration: primary sound driver), playback produces no audio at all. Instead, WACUP races through the entire playlist within a few seconds, each track is treated as finished immediately and the next one starts. No error message is shown.
The same behaviour occurs when routing through Not So Neo → Not So Direct.
Working configurations
Other output plugins (YASAPI, Wavery) play back normally, so the issue appears to be specific to Not So Direct.
I think I was on v1.99.52 before updating.