Could buy several shitty computers and link them to your main pc instead of doing the VM route (very resource intensive).
With Autokey (Linux alternative to autohotkey where code is in Python), you could write one ahk for all windows or control them all with individual AHKs (you can control windows computers through a Linux box with no VM in between).
If you are really gangster, combine barrier with VMs. One Linux computer with all the specs and a big monitor linked with 9 other shitty laptops. Have each laptop running a VM with however many osrs clients it can handle. Here you have a bot setup with 9^n bots running where n is how many VMs the shitty laptops can handle. All controlled on one screen with Linux Barrier.
You can literally get $5-10 laptops off eBay and load them with Linux Ubuntu Mint by formatting the OS ISO image file onto a flashdrive and booting the shitty laptop with that flashdrive.
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