Long static pops?

Have you used resplendant's latency monitor to check your machine?
 
It makes sense to rule that out first.
 
http://www.resplendence.com/latencymon
 

Next, are you live recording when it happens or does it happen when mixing.
 
I'm wondering if we can exclude external hardware.

I  use to get what sounded like a electric snake slithering through the cables... then I started using a power conditioner...

is your internet connection a wireless set up ?
Turn it off in device manager and re-test.

it depends if you have a wireless connection on that PC, even though you are hard wired, it wont matter, it will still cause interference. if you go in to device manager under connections you will see it if there is a wireless connection.
This has happened to me before and it does sound like a classic case of interference.
If its a grounding issue then try plugging all your gear in to 1 outlet. this will avoid using 2 power sources on different breakers which is always a problem with grounding.
 
However it could be buffer rate is low, possibly a bad USB cable or even a bad USB port.
 
Ill share a story with you,
2 years ago I had this god awful crackling going on and it miffed me beyond belief.
It turned out that I had been connecting and disconnecting my Audio interface/soundcard to the front USB hub in my PC front panel. After doing this 90000 times, I wore the USB port out.
So it was making a connection but not a total connection. So I reinstalled the drivers and used the second port (right next to it) and never had another problem.
 
However now I use a power conditioner to shut all my audio gear down at once. (1 switch turns on speakers and soundcard). So a cautionary tale about wearing out USB ports. it happens.
 
It can be frustrating no doubt figuring these things out but here it is...
Break it down to simplicity, start ruling things out 1 by 1. cords, wireless, ports, power adapters for gear. sooner later you will find it. lets just hope it is sooner than later

Ah. And a high-frequency whine, too?
That's a digital ground loop. Your interface and your computer have separate ground connections.
I have this ever since I got a Roland OctaCapture.
 
Nothing to do with plug-ins, buffer sizes or the like.
 
The solution is a bit more difficult.
 
Do you have monitors connected or are you using headphones?
What happens if you disconnect your speakers completely and only listen on headphones?
Is it still there?
 

gswitz is on to something. I had a similar issue with a wireless Logitech mouse as well.
Try another mouse as a test.
 
PS- you change the buffer rate for your Focusrite in the devices tab in preferences.
there is a rectangular box you click to open up a separate pop up screen with buffer / Asio buffer rate.

It turns out I have no problems in any other project. This project gave me problems when trying to open it from the start screen. It would crash. So I had to open it up from within another open project. Once I bundled it, I saved it as project once again and now I can at least open it from start screen. However, it may be corrupted somehow still enough to cause this scratching pops when recording a vocal track. I do have 24 tracks going, but I have 22 in another which gives me no problems. I don't want to scrap the song because I worked hard and everything is done but the vocals. I've been looking for a way to start a new project and import one by one the tracks from the problem song until I've maybe found a possible problem track or eliminate the corrupted whatever by a fresh start. Is there a way to import tracks from one project into another? Or by everything I just explained do you have a possible solution? I can eliminate the problem if I want to deal with high latency of 1024!