What do you want to do with Hls.js?

I want to disable autoLevel completely. When users choose a quality, I want hls.js to stay on that level no matter what.

What have you tried so far?

I've already tried setting hls.loadLevel and hls.currentLevel, but it's still changing to -1 when user's connection speed drops.
hls.loadLevel = userQuality
hls.currentLevel = userQuality

I didn't have this issue with older versions (0.14.17), but since I updated to a newer version (1.5.20,) I have this problem.