Gmat technique: forgetting about time

Hi,

I was wondering if someone has used the following technique for the quant section (I'm sorry if it is already discussed in older post).

Focus 100% in each question, no matter how much time is spent in each one, and guess the remaining ones. For example, forgetting about the time until the last 3 minutes, and then guess all the remaining questions. Of course, if a question is getting too much time or I get stuck then do an educated guess.

Actually, I think I'm able to make almost the 25 questions right in a row if I don't worry about the time. In fact, when I start worrying about the time, then my brain starts freezing and my accuracy goes down quickly. I just can't manage well the time pressure and I start doing errors in basic math operations, and missing 600-700 questions a lot.

Doing the test trying to be always on time, in the end it's possible that I could have the same number of correct answers from the 37 questions but it may be better doing 20-25 well in a row.

My goal is to get a Q50 or Q49.

Any thoughts on that will be appreciated.