Use enough strands to begin with. I've been tinkering with strings for 20 years or so, and have yet to find any real benefit to "skinny" strings. It was a fad some 15-18 years ago, died off, and came back. I've never seen a consistently good tournament shooter (someone who has made a name for themselves by winning) use a tiny string.
If you are worried about 2-5 fps, why shoot traditional gear? For noise, learn to tune and work on your release.
If you are using a moderate size string, then the proper size serving should do the trick.
Last resort, for me, is dental floss.