In Google interviews, it expected the candidate solves the problems and solves them in the efficient way possible.i got the first round from google, Did good in the other software eng questions flunked dsa,wasn't able to complete the 2nd dsa question in time.Has been months since i heard back from them.
The interviewer sometime provides hints, which is again amounts to negative impact on the overall feedback.
Time and space complexity - they would always ask these.
In one of my DSA round, though I was able to come up with the naive solution( O(nlogn) ), but to come up with the the efficient O(n) one, interviewer had to provide a hint (which data structure to use) and he mentioned the same in my feedback and rated me 'leaning to hire'.
(Ratings are - Strong Hire, Hire, Leaning to Hire, Leaning to NO hire, No Hire)