(Image credit: HBO Max; Shutterstock) At the beginning of this month, HBO Max dropped a huge batch of new movies into its already packed library, so there’s no shortage of fresh picks to stream this month. A packed release slate is great in theory, but with so many new films arriving across multiple streaming services , deciding what to watch can quickly become overwhelming. That’s why I’ve skipped the full HBO Max May lineup and focused on five new additions, all earning at least 90% on Rotten Tomatoes. This is a solid benchmark for quality. HBO Max is in great form this May, with a lineup full of must-watch movies. With so many well-reviewed titles available, it wasn’t easy to choose, but these five are the ones that stood out the most.…