No, you shouldn’t do that. The Metasound really works without lag, but it has very minimalistic functionality, for example there is no loop for N iterations, no such feature as “Crossfade by Distance” and many more, so I’m unable to make a simple rifle burst sound with echo in the end.
The Metasound looks like an unfinished feature prototype with a very interesting idea which should be implemented later, so, we’ll wait.
Regarding sound lag problem - I have it only for sound playing through the Audio Component of my rifle BP. If I use simple montage with looped shots where every single shot is triggered by corresponding Animation Sequence I get correct sounds without lags and with proper fading by distance - this has fixed my problem.