My admittedly old but still very functional setup: - Mac Pro early 2008 8 Core - 12 GB Ram - ATI Radeon HD 4870 - Apps running on SSD drive - Presonus Firebox interface connected via Firewire - Adobe Premiere Pro CS4 For my project, I need to record new audio dialogue for a movie sequence. My mic is plugged into the Firebox, and I record directly into the audio tracks section in Premiere Pro. Technically, it works, but there is a slight lag. I always need to move the recorded audio section about 1/4 second back so it will be in synch with the video. Any idea what is causing this lag in my setup? Will a simple hardware upgrade help (ram, video card, interface)? Should I use an entirely different setup to achieve my goal? Is the CPU simply too old/slow for this?