I remember EFB to ram used to run really slow in skyward sword with OGL, now it suddenly runs full speed. I did however, upgraded to a Skylake CPU. Is Skylake that much faster than Haswell for EFB to RAM or did someone messed with the efb to ram code.
I suppose that depends on what version you upgraded from and to, but probably.
EFB 2 RAM performance issue are mostly because of the GPU latency, so did you also switch the GPU? Skylake is usually only about 15% faster than Haswell, so this shouldn't be as much...
yeah I switched from a 780 to a 980. But the 980 actually has less memory bandwidth than the 780.
I'm pretty sure Maxwell cards (GT 750, GTX 750 Ti, GTX 8xx, GTX 9xx) compress stuff before sending it through the memory bus, so they perform as if they had a higher memory bandwidth than they actually do. AMD have some cards which do this, too, but I'm pretty sure they deemed it unnecessary for their HBM cards (the Fury series).