I have my GS108Tv2 router connected to a Synology 1815 NAS, a couple PCs and of course an internet connection through a D-Link GB Switch DGS-10240. All direct connections through the router work very well and I get transfer speeds to the NAS around 100 to 120 Mbs. However when I plug into other jacks managed by the D-Link switch my transfer speeds to the NAS drop to 10-11 Mbs. In reviewing the router port information I noticed that the Link-Up Speed for the port where the internet is connected is only operating at 100 mbs Full Duplex. All other ports in use are operating at 1gbs. Also there is no way to manually set the port higher. Testing the output from the switch I verified it's running at 1gbs. In fact another NAS I have connected directly to the switch has no file transfer issues regardless of where I am plugged in my network. The screenshot attached shows the port information.
In addition when I plug into another jack and begin a single transfer to the NAS if I pause the transfer and then restart it, the upload speed exceeds 150mps until it gets to about 95% completion and then it just tanks and completely stops at 99%. My machines are all running Windows 10 and I updated my router to the most current firmware. Wondering if anyone out there has any ideas on what might be happening. Any insight is appreciated. Thanks in advance.
