Hero, do you use a game controller? I have been having the same issues on every single one of my PCs with FFXIV, and I believe this issue is the evolution of the "since 2.0" game controller issue that SE has yet to fix. Basically, when the system detects a new device or a new virtual disk, XIV (and only XIV) gets disrupted when using a game controller. Unplug the controller and no issue. Have it plugged in and the issue occurs. In 2.0-4.0 you'd continually run. In 4.0-6.0 you'd stop. Now in 7.0 the entire game freezes for a second.

SE really needs to fix this. it's been all over these forums, the steam forums are lit up, and it just keeps being swapped back and forth between "bug report" and "tech support" with both departments saying it's the other department's issue. It's frustrating.