Thank you for testing and bringing this to our attention. For (1) question, LA_ICQ/LA performance is a know issue and it is due to shared memory access b/w CPU and GPU used which is more than expected. For (2) question LA downscaling is not enabled on latest drivers. But, both these issues is expected to fixed with upcoming/later driver releases for Skylake.
is there any progress on this issue ? Il also have a 10 to 30% performance hit (closer to 30%..) when using regular LookAhead, whatever depth I choose.
I am using the 2017 SDK, on Skylake.