18.04 is slow in VirtualBox—how to make is usable?
108362
How do I resolve slow and choppy performance in virtualbox?
107437
VirtualBox - XP guest does not see multiple cores/multiple processors
27698
How to install VirtualBox Guest Additions for Ubuntu 16.04
75323
Can a 64-bit OS run as a guest on a 64-bit VirtualBox host?
49952
VirtualBox - how to increase video memory?
23838
Why is Ubuntu 14.04 so slow on my laptop?
139647
Do I Need Linux Drivers For Virtual Box?
101650
Increase resolution to 4K in VMware or Virtualbox
25456
Applications load slowly on Ubuntu 18.10 - seems related to fontconfig
29164
Setting up vhost on VirtualBox with Ubuntu 16.04
17225
Can I use virtualbox with a 64 Bit image in a 32 bit host
59669
How do I speed up lackluster hardware running Windows 7?
63974
How to fix 'modprobe vboxdrv' error in virtualBox?
155325
What does "No bootable medium found" mean in VirtualBox?
20367
Ubuntu 20.04 Gnome Very slow
147733
Ubuntu/Kubuntu 16.04.1 installation in VirtualBox
142825
Why my ubuntu 16.04 LTS suddenly become very slow?