Unable to control hero / hero getting deselected

So I have a couple of problems that I only recently have begun to experience in Dota 2:

1.Sometimes, the hero gets deselected, without me pressing anything or clicking anywhere. This is often but not always accompanied by loss of sound; the music and any other source of sound just get muted. Once I select my hero again, the sounds and music is resumed.

2.This one is a relatively new one. Sometimes, when I tell my hero to move somewhere, it won't move. It is selected, and I can see everything else thats going on (so it's not like I've lost connection). And I can even buy stuff in the Shop. The only problem is that my hero won't move. I have not yet checked if it can cast spells when this happens. Disconnecting and then reconnecting solves the problem, but obviously it still is a problem.

I have a hunch that it has something to do with my network and/or connection to the server, but while I do sometimes experience lag or a slow connection, it is pretty good most of the time, and the problems above do not necessarily occur when I have a bad connection.