The inconsistency you're describing is completely normal at this stage, and it actually tells you something useful: you're not dealing with a knowledge gap, you're dealing with a question interpretation problem. PMP questions are designed to test situational judgment, not recall. So "large amount of information" is a bit of a false enemy. The real skill is learning to read what the question is actually asking.
A few things that tend to shift this quickly. First, after every wrong answer, don't just check the correct one. Write down in one sentence why you chose what you chose, then why the correct answer is better. That forces you to surface the reasoning pattern, not just the right answer. Second, group your quiz results by domain (People, Process, Business Environment) and see whether the inconsistencies cluster there. Often it does, which makes the target much smaller. Third, resist the urge to do more quizzes until the pattern is clearer. Volume without diagnosis just reinforces uncertainty.
On simulators: PM PrepCast has consistently been the best option for realistic question quality. Worth using if you aren't already:
bit.ly/43kKcM3
For a San Francisco study group, your best starting point is the PMI San Francisco Bay Area Chapter. They run regular member events and often facilitate exam study groups. A quick LinkedIn search for "PMP study group San Francisco 2025" can also surface active peer cohorts.
If you want to be among the first to know when the new structured PMP program launches (in cooperation with Alvission Education), sign up for the free Alvission Career Compass:
community.alvission.education
Please verify all PMI-specific details against the current Exam Content Outline and Examination Handbook, as PMI updates these regularly.