How to deal with the drop in the transfer rate of content in the home network?

Question

WiFi

Good afternoon. Organized wi-fi network at home (netgear router firmware V1.2.2.56_35.0.56RU, synology 110j network storage and nexus 5 mobile phone with stock firmware). When playing a movie via wifi from a NAS, the first few minutes the movie plays without problems. After some time, the playback of the film stops, as if there is not enough speed ... then it shows a few more seconds, and then again "brakes" ...
After all, it seems that the speed is enough (in theory) and the first minutes are shown without problems ... Such the feeling that the speed at the time you start watching the movie is one, and then drops sharply, and not immediately, but after a few minutes. What could be the problem and how to fix it?

Answer 1

Probably not enough wi-fi bandwidth. I have an iPad and a Synology NAS (wired to a router). My router is dual-band (2.4GHz, and 5GHz) and if you connect to 2.4GHz, then heavy (16GB mkv) video will slow down (on a laptop the copy speed from NAS is ~ 12Mb), but in 5GHz there are no "brakes" at all (on a laptop copy speed ~25Mb). Maybe you should play around with the buffer size in the player (if there is one)?

Answer 2

1. Large movie file size?
2. Try to turn off the torrent downloader for the time of viewing (I have Hdd on my home PC with a low read / write speed - I feel a problem with downloading / uploading) 3.
Measure the speed / transfer time of some large file
?

Answer 3

File size 3 GB.
Torrent downloader disabled
The data transfer rate also jumps. Keeps around a megabit per second (I copy ES with a conductor, the speed is also shown there)
Is there any way to measure the speed from the phone to the router, i.e. not the speed of the Internet, but the speed of this particular section of the phone-router?