install/56883: Installing NetBSD-9.99 in a VirtualBox with 2 CPUs repeats keys

[roland.illig%gmx.de@localhost]

>Number:         56883
>Category:       install
>Synopsis:       Installing NetBSD-9.99 in a VirtualBox with 2 CPUs repeats keys
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 14 21:00:00 +0000 2022
>Originator:     Roland Illig
>Release:        9.99.97
>Organization:
>Environment:
NetBSD nbinst.fritz.box 9.99.97 NetBSD 9.99.97 (GENERIC) #0: Mon Jun 13 20:16:53 UTC 2022  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
Install NetBSD in a VirtualBox VM, using the default settings.
I am using VirtualBox 6.1.34r150636 on Windows.
Shut down the VM.
In VirtualBox, change the CPUs from 1 to 2.
Start the VM.
Type some text.

The repeat rate is about 30 characters/second, which is fine.
The initial delay is around 50 milliseconds though, which makes it difficult to type single letters.
>How-To-Repeat:

>Fix: