Interestingly - if you use a V2 EVGA bridge - Pascal detects it as a HB bridge even though its only using one set of fingers per card... it has to do with the metal housing. Ive discovered some of the compatability bits are specific to 2/3/4 way and that different bits are required in some games for different numbers of cards. I need to spend more time testing before I share what I have found so far. I figured as much! bandwidth limits are a real problem... A major problem is that in order to use 16x16x8x mode (40-lane cpu) I need to use a different PCIE slot configuration (im using 8x/8x/8x/0x and id go to 16x/0x/16x/8x) meaning id need to ghetto mod a magic SLI bridge and my parallel water bridge wouldnt fit right and id need to redo my custom loop *sigh* - it just becomes a bit too much effort for no real world gain... its so rare for two way 1080ti to be a limitation. I'm consdiering the upcoming x299 platform as a solution to this problem of PCIE bandwidth and as a solution to my old Haswell CPU being a little behind in the times now... even in Timespy benchmark my CPU is limiting my GPU scores. 3.3ghz / 4.25ghz / 4.75ghz all return increasing GPU scores... being CPU bound in Timespy was something I thought would take a little longer to acheive... a guy on youtube (I cant link yet, too noob) has managed to force ME:A to run in 3-way. I got it working but suffered a performance hit on 3-way compared to 2-way, I dont have the profile perfect yet.