How to cut the 808 tail at the end of a pattern

Hi,
I love Sub Lab, but I cant seem to cut off the 808s at the end of the pattern without rendering the pattern and cutting the rendered wave. I am using FL studio 20+. Basically, I cannot stop the tail from bleeding when I want to. I usually place an 808 not with zero volume and rely on the cut-self feature to stop the 808 from playing into the next space at the end of a chorus or stanza or at a pause in the song. However, the vst does not perform the stop for me. Is there a setting to accomplish this or a work around?