Poor WIFI - config recommendation

I’m having a few pauses in the sound probably because the poor quality of my WIFI.

My setup is:
Main Router -> [Cable] RPi
Main Router -> [Wireless] Another Router
Another Router -> [Cable] Desktop (nas server)

I would like to know what are my options the fix this issue, raise the buffer? What else?

Yes, increase the buffer before play and buffer size from playback options

Let me know!