[Vitaliy Vinogradov]

Adobe After Effects CS6, CC, CC2014, CC2015 Ray Traced GPU Render Engine
Nvidia Optix 3.9.2 (https://developer.nvidia.com/designworks/optix/downloads/legacy)
manual replaced optix.1.dll in folder …\Adobe After Effects CS6\Support Files
and edited raytracer_supported_cards.txt file
Ae CS6
nvidia driver ver. 378.92

GTX 980 Ti PCIEx1 (riser in x16) (core/mem 1000/7008 MHz) 00:03:07
GTX 980 Ti PCIEx1 (riser in x16) (core/mem 1250/7008 MHz) 00:02:52
2x GTX 980 Ti REF PCIEx1 (risers in x16 and x1) 00:08:53*

GTX 1050 Ti OC PCIEx1 riser (core/mem 1354/7008 MHz) 00:06:42
GTX 1050 Ti OC+ PCIEx1 riser (core/mem 1554/8008 MHz) 00:06:28
2xGTX 1050 Ti OC PCIEx1 risers (core/mem 1354/7008 MHz) 00:08:00*
3xGTX 1050 Ti OC PCIEx1 risers (core/mem 1354/7008 MHz) 00:05:51*

GTX 1070 PCIEx1 riser in x16 (core/mem 1506/8008 MHz) 00:03:25

* – this is very strange, the reason is in the risers and the fact that the 2nd and 3rd cards are connected to the PCIe x1 ports

P.S. Nvdia Optix 4.0.0 and higher print message about wrong driver version (need testing)