Well, if you can somehow improve your speed at solving problems with practice, that'd be great. Though that's easier said than done. In the meantime, I think the easiest way to deal with the time problem on the PGRE is when you read each problem, decide beforehand which ones are likely to take a long time, and skip them without even starting them. Questions that seem to involve a lot of calculations, or questions that focus on your weak spots, just skip them. Doesn't even matter if you skip a third of them or more because you can get back to them later once you get past question 100. Be careful if you skip around not to screw up marking the scantron answer sheet.