I recently upgraded my Dlink Dir655 router to a netgear R7000 with tomato firmware. I have noticed huge file transfer to my main pc is causing windows explorer to stall during transfer. The transfer speed are around 80 to 90mbps with a file size around 8 gigs. Small files aren't much of a problem. I noticed the network utilization from the task manager in window 7 jumps around 72% during transfers. I didn't have this problem with the Dlink router, but I didn't have sustained writes speeds so high during transfers either. I have my nic set to auto negotiate, if changed to 100 full speeds are slow. I don't have these same symptoms on my other pc's on the network so I am thinking it could be a driver problem with the nic. I have Marvell Yokon nic not sure the exact model as of now. I did upgrade the driver but it didn't make of a difference. Any ideas what maybe causing this problem? Could it be the tomato firmware? I didn't think to test file transfer with the stock firmware. As anyone ran into this weird problem? I have an SSD for the C and 2 regular internal and one external drives. No matter what drive the file gets transferred too, the freezing occurs in windows explorer. The only thing that has ever changed is this equation is the router.