[newbe]

My problem is as follows. I have a large amount of .avi files and .mpeg files stored on a network share (60G of stored files). The network share is connected via a DLink DIR 628 802.11N router and a WUA 160 Dual Band N USB Adapter. I am using the 5...

My problem is as follows. I have a large amount of .avi files and .mpeg files stored on a network share (60G of stored files). The network share is connected via a DLink DIR 628 802.11N router and a WUA 160 Dual Band N USB Adapter. I am using the 5 GHZ Channel and have an indicated speed of 270 MPS. My signal strength is excellent. When I play the .mpeg files using WMP, there are no problems at all. When I play the .avi files, they will play slow until the first pass through. If I do not close WMP, and replay the file, it will play fine from that point on. If I close WMP, and I reopen the file, the same problem occurs. If I connect the PC with the network share via a CAT5 cable, bypassing the router, the problem goes away. I have tried disabling Windows firewall and my antivirus with no effect. File permissions for READ ONLY have been disabled along with Indexing for the network drive. Any help would be appreciated.

PC 1 is AMD 2800 2 G Ram 7200 RPM IDE drive
PC 2 is AMD 3200 CPU 2 G Ram 7200 RPM SATA Drive
Windows Xp SP3 both machines