Too much recursion on deep grouping?

I have just updated to the new version so that I can validate elements within observable arrays.

Now I have added the grouping: { deep: true } to the configuration, and when I trigger validation the entire page locks up and then after about 5 seconds I get the error too much recursion.

Now I understand what the error means, its going too far down the tree when evaluating observables, and while my models are large they are not SUPER huge. So I am a bit baffled as to why it would cause this.

My object looks something like:

• Character
  • Details (Pojo)
  • Notes (Pojo)
  • Credentials (Pojo)
  • Stats (Pojo)
  • Status (Pojo)
  • Skills (ObservableArray of Pojos, usually has about 10)
  • Powers (ObservableArray of Pojos, can have N amount, in this example has 1)
  • Items (ObservableArray of Pojos, can have N amount, in this example has 0)
  • Attacks (ObservableArray of Pojos, can have N amount, in this example has 1)

So I would not see this as a HUGE model, nor would I expect it takes that long to scan as it would only end up going down 2 levels as no Pojos contain any observable arrays. So is there anything else I should be doing or does it take significantly longer to do scans with observable arrays?