I have had my first play session without audio popping and stuttering since installing the game last week and I'm sharing what I did in hopes it helps someone else. What I was experiencing was only present after fully logging in but otherwise CONSTANT popping and stuttering which sounded just like the example in the first post of this thread, (but without end) and it would get worse even if I just targeted the door in my inn room.
The suggestion by SE to reduce sample rates and such on sound devices did NOT work, but it got me into googling for ideas on how to optimize my PC's sound. The below is cobbled from a few different guides on audio optimization. I hope it helps some others out and that the fix wasn't temporary on my end.
1. I'm currently playing in DX9 mode. Not sure if that matters but I wasn't about to log out and wait in the queue to test once I got it working tonight. I will test DX11 mode tomorrow. (It also works in DX9 so this is probably unnecessary)
2. Set processor scheduling to "Background services"
- In Control Panel select "System"
- Go to "Advanced system settings" and then the "Advanced" tab
- Click on "Settings.." under Performance to bring up the "Performance Options" window.
- Go to the "Advanced" tab and set processor scheduling as "Background Services"
- Click "Apply" then "OK"
3. High-Performance CUSTOM Power Plan (I was in Power Save settings prior to this)
- Open Control Panel and search for ‘Power Options'
- In the menu on the left, select ‘Create a power plan’.
- Select ‘High Performance’
- Give your plan a name: For example, ‘Audio Workstation’.
- Select ‘Never’ for both ‘Turn off the display’ and ‘Put the computer to sleep’
- Select ‘Create’
- You will now be on the Power Options page where your NEW custom power plan will be selected.
- Select 'Change Plan Settings' for your NEW custom power plan
- Open ‘Advanced power settings
- Expand ‘USB settings’
- Disable ‘USB Selective suspend’
4. While running FFXIV, change priority to high in Task Manager.
- Press Ctrl + Shift + Esc to start Task Manager.
- Go to the Details tab, right-click the desired process, and choose Set priority and select any value that you want.
- When the confirmation dialog appears, select Change priority.
This also came with the added bonus of fixing what my FC homies were referring to as "taco bell drive through mic" on my end. Go figure.
FWIW I am running a nearly 12 year old Gateway FX 6860 with Intel(R) Core(TM) i7 CPU, 8gb RAM, and upgraded to SDD + Refurbished: MSI Radeon RX 570. (So I should be able to run DX11).
Good luck folks. SE needs to put out some better guidance on fixing this issue than what they have provided so far. Reducing sample rates does nothing.