You can install this repository in all recent Debian (and derivatives) on AMD64 or ARM64.
Download sound4soft-archive-keyring.deb and install it :
wget https://deb.sound4soft.com/sound4soft-archive-keyring.deb
sudo dpkg -i ./sound4soft-archive-keyring.deb
sudo apt update
If you prefer fully manual setup :
wget -O- https://deb.sound4soft.com/sound4soft.gpg.key | sudo gpg --dearmor --yes --output /usr/share/keyrings/sound4soft.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/sound4soft.gpg] https://deb.sound4soft.com stable non-free" | sudo tee /etc/apt/sources.list.d/sound4soft.list
sudo apt update
sudo apt --install-recommends install sound4.aoip.cl
It is recommended to have a server version of Linux, without GUI, to avoid realtime drops.
A lowlatency or realtime kernel might help to achieve better results.
Try to avoid CPU frequency scaling.