It seems to me that there's a massive wall at 70 and there's a massive wall at 95. Unless we get some big bad or good news we might hang around 70 something to 90 for a while, but why 70 - 90?
What the are you talking about? A 10% range is not stable, and a few hours is nothing.
In the news today Apple shares are crashing today, they are down 5%. Look at that again, 5%. Whatever you want to call the bitcoin market, stable is not the right word.
But even when the price is moving >100% in a day there are a couple hours at a time when the price remains "relatively stable". If the price is not moving right now it just means that the graph you are looking at is lagging behind the market trend.