Very large audio delay in Windows XP guest while CPU loaded at 100%
|audio, sound, windows xp, delay
I discovered a new bug in VirtualBox v5.1 that did not happen in v5.0 and older versions.
When running a Windows XP SP3 guest on a Linux host (with sound configured for ALSA on the host side and AC97 on the guest side), I get very long delays in games (1 to 3 seconds !) between the moment the sound is triggered and the moment it gets played: the higher the load on the CPU, the longer the delay.
Turning on HPET on the guest doesn't change anything...
I'm attaching a log of a short session when I started the VM and a game in it, clicked on menu items (which produce sounds at each click), got the delays each time, and shut down the game and the VM.