Running Win 11 ARM on M1 MBA.. randomly (maybe once every day or two), upload speed slows to a crawl in VM. No issue with download speed. 80 down/~0.15 up speedtest. 80/80 in Mac. Using shared network. Not sure if this is a Windows 11 or Parallels NIC driver issue. The fix is simply to disable and reenable the NIC (in Windows). Haven't tried iPerf or anything to confirm it's both LAN and WAN, but would I assume so. Kind of hard to definitively pin down when it happens, but it SEEMS to occur after Windows or the Mac has slept. Event viewer shows repeated errors below until it's fixed, maybe Netbios related. I will try to disable Netbios but anyone have any ideas? The server could not bind to the transport \Device\NetBT_Tcpip_xxx because another computer on the network has the same name. The server could not start.