USDQ is probably the worst stable coin what I have ever seen. They should be backed by their own token LHT. But LHT token is useless and nobody wants it. So 1USDQ is no 1USD no, but only few cents. 
Stable coins should be back by real asset, USD, AUS, CAD, gold, silver, whatever have true values in real life and have been accepted globally for a long period of time in human civilization. Stable coin is back by a token, nope, I don't think it is a good stable, sounds like a fake, scam one. If a stable is back by a token, it is worse than a stable coin is back by bitcoin. Because bitcoin will not die, but tokens will do die over time.