One thing that is covering up the Avs' issues is the power play and generally how far they are outkicking their coverage offensively. As a whole, the Avs are .37 goals per game ahead of their expected rates. .2 of that is 5v5 and they are 1.1 ahead on the power play. Currently, the Avs are typically outscoring their below average play in net. If they were hitting their expected numbers and getting this level of goaltending... we're probably talking a .525-.550 team.
Thus far the offense has outperformed by a much, much higher rate that the goaltending has underperformed. If that overperformance ticks down to say .15 goals per game and this goaltending continues, the results may not be pretty. The good news there is both could regress to norms and the Avs would generally be fine.