Photoshop is a pretty resource intensive program that can slow down to a crawl when you’re working with large and/or many files. Aside from beefing up your hardware specs to provide the program with more memory or disk space, there’s also a number of Photoshop and operating system preferences you can adjust to make sure the program runs as smoothly and quickly as possible. The Photoshop performance team recently published a helpful guide with 19 adjustments you can make, which range from optimizing cache level to turning off thumbnail display.