Sound cutting off with AHDSR and spatializer

I’m trying to set up a simple TV white noise with a spatializer and AHDSR so the noise fades in and out properly, unfortunately when I add spatializer the sound just unnaturally cuts off when it (I assume) gets culled by the spatializer at long enough distance.

How can I get rid of it so the AHDSR is not ignored and the sound always fades out despite using sptializer?