Guild Wars 2

Which option will make sounds better and does it affect how sounds are sometimes cut off?

Mixing Buffer Size <Lowest Latency | Most Stable>
Dictates how much memory the sound engine will use, from a large amount of memory and lower latency to a smaller amount of memory but more stability.

I do not quite understand what this means.

Source.

Google is your friend.
And GW2 Wiki is your best friend.

“Dictates how much memory the sound engine will use, from a large amount of memory and lower latency to a smaller amount of memory but more stability.”

Source: http://wiki.guildwars2.com/wiki/Options

I asked the same question a while back. Read here the answer I received.