Sound lag. The sound and present actions walk past each other. Arch Linux host, Windows guest

[mozo]

Since month or two when I take an action sound lags behind. I use heavily GuitarPro 4 and when I press Play, the program start playing as the cursor moves around the notes, but the sound lags behind and the playback starts approximately 2 seconds after the pressing. When I want to stop playing, the moving cursor, which shows which note is being played at the moment, stops immediately but the sound actually stops after 2 seconds.

This lag is presented everywhere - for example start a browser and watch video on YouTube - sound and picture walk past each other and the synchronization is lost.

This happens on Arch Linux host and Windows XP, Windows 7 and Windows 10 guests. There is no difference between the different guests. All of the guests have the latest Virualbox Guest Additions 5.1.6 installed.

There has been a discussion about this in ​https://bbs.archlinux.org/viewtopic.php?id=217686.

Here you are a reference video of the problem:

​https://youtu.be/gej7gMwAQug

So the program is completely useless for I don't know which note playing at the moment.

[mozo]

Virtualbox log file

[pentagonik]

Thanks for the detailed description and references. We're already aware of the problem and will have a look at this as soon as time permits.

[mozo]

Replying to pentagonik:

Thanks for the detailed description and references. We're already aware of the problem and will have a look at this as soon as time permits.

Thank you, have a nice day :)

[shojep]

Still present on 5.1.8-1 btw.

[shojep]

I've noticed that it's most prominent during midi playback. When playing an mp3 it's less noticeable (but it's still there).