I personally feel that skipping MSR rarely works in your favor. The main reason is that you never know how many MSR sets you’ll get. If you get more than one, you’re forced into a guessing game about which one to attempt and which one to skip, and missing 6 questions can completely derail your score.
There’s also a real possibility that one of the MSRs could be experimental. If you end up attempting that one and skipping the one that actually counts, you still lose all the points. Even if you get lucky and receive only one MSR, skipping it still means 3 wrong answers in a row, which breaks the score trajectory and limits your overall ceiling. So either way, it’s not a great place to be.
My advice is simple: give yourself a maximum of 8-10 minutes per MSR and attempt it as carefully as possible. Spend around 3–4 minutes understanding all the tabs, then about 1–2 minutes per question. Remember, not all questions in an MSR are difficult. If you manage your time well, there’s a good chance you can still get 2 out of 3 correct. This also gives you the option to skip the hardest question or the one with the most sub-parts, instead of skipping the entire set.
One strategy you should follow throughout DI is to save time on easier question types like DS and G&T. The time you save there can be reallocated to MSR and TPA, where time investment matters more. Also remember, you don’t need to understand everything in DI in depth. You just need to get good at focusing on the key data and retrieving it quickly when the question demands it.
KhushiWGupta - It’s always a good idea to take full sectional mocks if you want to practice time management, and GMAT Club mocks should be sufficient in most cases. In fact, I think they’re slightly on the harder side for DS, so if you’re doing reasonably well on them, there’s a good chance you’ll do even better on the real test. You can also practice by doing back-to-back 3 MSRs from the GMAT Club practice forum to keep your mind sharp and improve your time management.