Sorry to see you were met with so much resistance here. The eGPU.io enthusiasts are more constructive in my experience. Though there remains a great deal of mystery yet to be understood. Regardless, thank you for your efforts here.
I respect your efforts to clarify misconceptions surrounding GPU bandwidth. If you're still around, perhaps you'd be interested in joining the discussions at eGPU.io https://egpu.io/forums/pc-setup/how-much-bandwidth-ovehead-does-optimusx-connect-accelerated-internal-lcd-mode-add/#post-3815