Newbie experiences sound stutter

Only 3 days passed since i have got beta access. From that day to now, didn't start a match. I need to learn the rules first. For this, one of the things i tracked is watching matches.

I launch any match then watch. Nevertheless, especially in crowded areas, sound and voices of heroes in the game stutters so much. Almost in any crowded event. I switched the visual settings, besides audio settings and tried to lower. Just a slight improvement occurred. My internet
connection speed is pretty decent. So, that can not be a problem. My system specs are not decent, though, i do not have any issue related to visual quality.

What should i do ?

If it is a visual quality problem than you probably need to get an updated or new video card.
You could also try lowering the resolution, I know it sounds weird, but try it.

Over all make sure your system specs are compatible and up-to-date on Dota 2, and go online and make sure your drivers are up-to-date.

Fortunately, you can play Dots 2 without sounds on, so you can just mute it. However, I think you should get new speakers if the lack of sound bothers you too much.