Okay, a big part of the reason your score hasn't been improving is your timing. This test is a "where you end is what you get" test - it does NOT average your performance once you get to the end of the test. So if you miss the last 5-7 questions due to timing issues, your score is going to plummet - and where you end is what you get.
Think about it this way: you will have to guess SOMEwhere. Your only choice is where. :) If you don't choose to guess on the hardest questions as you see them, then you are going to be forced to guess at the end of the test.
Read this right now. If you've already read it, read it again:
https://www.manhattangmat.com/blog/inde ... lly-tests/Read it every day for the next two weeks. :) You're taking the test the wrong way - you're actually not showing how good a business person you can be! Good business people can assess various opportunities and decide where to spend their valuable time and energy. The GMAT wants to see that same kind of prioritization and discriminating behavior from you! (And you know how to do this already - you do it at work, right?)
How do you know that your timing was "near perfect" on the GMATPrep? Did you time yourself per question?
I ask because I talk to people every day who think their timing is near-perfect because they finish the section right on time. But the per-question timing tells a different story. Your timing isn't perfect if you spend 3+ minutes on 5+ questions and then rush on others to make it up.
Where are you spending too much time? What are the patterns? PS vs. DS? Story problems vs. "pure" math problems? Certain topic areas?
RC opening questions (in our tests) should be in the 3 to 4 min range - you're both reading and answering the first question. So that's just fine.
You can do some things to work on mental stamina. GMAC does also allow extended timing for people living overseas - but maybe you mean it's too hard to get updated documentation of your condition?
Take a look at this:
http://www.manhattangmat.com/blog/index ... you-crazy/As you study, think about how you can minimize decisions during the test. The more you set yourself up to react (because you've had to make a similar decision before, so you can just go with it again the next time), the easier it will be to get through the test. (Though still not easy, of course!)
Also, do enough prep for both essay and IR that you can get "good enough" scores while using a minimum of mental energy. For instance, have a template ready to go for your essay: you know how you're going to organize things and the kinds of things you're going to say before you even get in there.
Here's one idea:
http://www.manhattangmat.com/blog/index ... no-thanks/For IR, skip 2 or 3 problems outright. Know what you hate the most so that you are not using up brain energy on those!
And fixing your timing issues on quant will help immensely on verbal. When you spend 3.5 minutes on a quant problem, you have a double whammy
even if you get it right. You have to rush somewhere else on quant AND you've just used up a ton of brain energy (for a single question!) that you cannot get back. Triple-whammy if you end up getting it wrong on top of that. Stop it! :)
That's your biggest issue in fact. You need to start believing / realizing that trying to get everything right is exactly the wrong way to win on the GMAT. It's not even what they want you to do!
Digest all of that and then let me know what you're thinking.