I can help there a bit (but I don’t use it regularly). On this other thread I tested with a device with the “AA Google Stubs” (and I consolidated them for download from my personal Github account), and another with the “full Google apps”. My testing showed that AA wireless was equally “buggy” but also was equally usable (light testing) when using wired mode.
For the voice commands, it is a “not ideal workaround” but keep trying! You may want to look broader at the aa4mg repo or with other de-Googled microG projects (/e/OS, lineage itself, maybe Calyx reddit even though they are now inactive, etc.)
All are slightly different but may give some perspective on if others are using voice commands or not.