The Samsung forum has this long thread about S8 users having slow Wi-Fi LAN file transfer speed. I have the same problem on my S7 Edge with Nougat. One curious thing is that when I upload from smartphone to PC, I get normal speed, which, for me, is about 366 kilobytes/second under 802.11g. I know this is normal because I get the same speed (up and down) on my Note 3 with Lollipop. But on my S7 Edge, the speed I get while downloading from PC to smartphone is just 117 KB/s. Downloading from PC, of course, is the more common thing to do than uploading, so this is not ideal. Is anyone's experience regarding this issue same as mine? I use this File Manager app to all the LAN file transfers. And my PC is Windows 7.