Sanity check needed here guys - I've been running 0.3 and now 0.4 with success but have always used the miner files labelled "...cuda8" - it occurs to me that maybe thats not the right, most efficient miner to use - I am running Win10 on all machines, latest patches, etc and using modern Nvidia GPU's like the 1080, 1070 with latest Nvidia driver. 

Can ewbf or someone clarify and maybe update the first post to include a pointer on which file to use under which Windows circumstance.