Notebook Audio

Device: Mine a brand new "HP Envy X360 15-CN0003CA 2-in-1 Laptop, i7-8550U" from Costco
It is running running Windows 10 - version 1809

The crackling sound is present on both speakers, more on my left speaker.

The sound in not present when using headphones.
The sound goes away when I mute the sound.
The quality of the sound is a crackling or grinding sound.
The sound is best heard when the speaker sound is set to 1, but not turned off, and any audio is played
The sound is present when playing any audio from any source.  (it happen when audio is played using gaming apps, any audio from any web browser (firefox, chrome, edge, IE), any music player (window media player).

When headphones are plugged in, and a video is played the first 3 second of the audio are not played  (due to another issue that hp messed up) however for the first 3 seconds crackling sound comes out of the Bang & Olfsen speakers on the laptop.

The audio issue does not happen every time. Some times it happen for a bit and goes away. Upon restarting the computer it comes back.

Things that I tried that did not work.

•   I initially thought that the issue was related to the issue caused me to loose the initial 3 second of the audio that I played. It was supposedly due to a power setting that caused a delay. But these issues were not related.(https://h30434.www3.hp.com/t5/Notebook-Audio/System-Sound-Delay/m-p/6508198#M91186) - No effect on speaker crackling
• Upgraded to most current version for all drivers using Hp Support Assistant - No effect
• Tried installing older versions of the drivers - No effect
• Tried changing all the setting of Bang & Olufsen Audo Control app when older drivers were installed (this app goes away when new drives are installed) - No effect
• Tried changing all the setting of the HP audio control app (which is installed with the new drivers) - No effect
• Tried changing the different setting on the "HP command center" Thermal profile for Hp cool sense, Heavy usage, and cool running - No effect
• Tried changing the "Turn on fast startup (recommended)" in Power Options\System Settings - No effect
• Tried Changing "Processor Power Management -  Mininum Processor State" to 100% under Power Settings - Advanced Power Settings - No effect
• Tried changing the speaker propertis from "sounds" in control panel -  changed Hardware accelleration, and exclusive mode - No effect
• Uninstalled Intel Rapid Storage software - No effect
• Disabled Wifi adapter, Bluetooth adapter, Intel display audio - NO effect
• Disabled "Sound Scheme" in Sounds - NO effect
• Tried different combinations of the above - NO effect

• Installed and Ran Latancymon
• It says "Your system appears to be having trouble handling real-time audio and other tasks"
• Highest DPC routine execution time (µs):              2673.649598
  Driver with highest DPC routine execution time:       ACPI.sys - ACPI Driver for NT, Microsoft
• Highest reported total DPC routine time (%):          0.138665
  Driver with highest DPC total execution time:         Wdf01000.sys - Kernel Mode Driver Framework

• Changing battery performance  - No effect
• Changing video playback setting - No effect
• Connected to power or battery - No effect

• Reset Bios to default setting - No effect
•  "Reset This PC" and keep no software or setting, as I had messed up my computer settings too much trying to fix this problem - No effect
  •  However I did notice some interesting things, the 3 second  audo delay that happens when playing videos did not start occuring until the second day, it occured around the same time the speaker problem started.  May be these problems are related.
•  Put A/C adapter directly in wall (making sure it was properly grounded), also removed all other devices that were in the plugged into the wall outlet - No effect

• Booted the computer up in the EUFI (by pressing Ecs) - went to into system diagnostics - checked the hardware - Audio - The speaker were normal (all 5 times). This mean that the problem is with Windows 10, or Drivers or Hp software
• Loaded Ubuntu onto a live disk and the speakers appear normal - This confirms that the problem is with Windows 10, or Drivers or Hp software.

This issue seem to have been been going on for about 4 years now. (https://h30434.www3.hp.com/t5/Notebooks-Archive-Read-Only/Static-Crackling-from-both-speakers-and-he...). Other computer such as the X360 Spectre are supposedly also having this problem too.

There are way too many audio problem with this laptop that I have to fix myself for this price.

Hp either tell me how to fix this problem in a few days, or I will be returing this $1,500 laptop.