15.6 , I7-7820HK, Non Optimus, GTX1070, Windows 10 Home 10.0.1904
eGPU performance loss
Fire Strike(FHD) : 52.67%(28000 -> 13253), Time Spy(QHD) : 24.15%(11000 -> 8344)
Fire Strike(FHD) : 36.03%(28000 -> 17912), Time Spy(QHD) : 15.31%(11000 -> 9316)
Conclusion: The performance degradation is very serious. It's not worth using an eGPU. Even though the eGPU was connected to the external display to minimize performance degradation, it is similar to my dGPU performance. However, I found hope in M.2. The performance of the M.2 is overwhelming compared to TB3. Please refer to my M.2 Build post.
Desktop~ PCI Express3.0 x16