Just to let you guys know

I've enabled my onboard intel graphics and use it at the primary display and all my other discrete gpu's don't have any display connected to them
This reduced the VRAM usage from 200mb to 8mb on every AMD gpu. Only side effect is that you will need to uninstall all your AMD cards before installing the intel driver or you might not be able to boot to windows.
Lower vram usage means that you can increase the mining intensity and have slightly better hashing performance. It also increased stability and system responsiveness because windows doesn't use those gpu's for nothing more than mining and the display is now handled by the IGP. If any or all AMD gpus crash, you will still be able to reset the gpu clocks with overdriventool or reboot the system safely

Hope this helps someone