Can i make sound in 4.0.4 the same as 4.1 weekly?

I tested with weekly 4.1 builds, but there is no stability on my system and I installed 4.0.4.
I usually play music on firefox fedora 33 vm
when migrating to 4.0.4 I ran into this

  1. The sound lags (especially with a loaded processor)
  2. The sound quality is much lower. (such a feeling the sound compressed, like 320Kbps → 128Kbps)

in 4.1, the sound disappeared only when the entire system was hanging

I am wondering if it is possible in theory and how difficult it is to make the sound like 4.1, and that the system would remain stable?