So searching forums I've found a UEFI edit tool, using this I can change the setup_var 0xd8 value to enable or disable speedstep.
It's literally already there, just tick the box to enable it when building the next BIOS version. As other posts here have shown you're letting competitors laptops run rings around your premium laptops because you can't be bothered to check a box. It's supported and managed by Intel, it works, just enable it.
