Random Wi-Fi death on El Capitan machine only

[Dakdot]

Good day everyone! Ever since I installed OS X El Capitan on my machine, I've been getting a very odd problem where the Wi-Fi connectivity dies out after a random amount minutes of watching Netflix or YouTube.  Once, it took two hours for this to happen, but the day after, it took two minutes. So far, the only way I've found to fix the problem is by restarting the router which takes a couple of minutes and disconnects the whole house. My wireless card is a TP-Link N900 which has worked without this error before. Also note, that I am a victim of the ATHR: unknown locale: 21 error, but I have applied the working fix. The machine is running OS X El Capitan 10.11.4, but I just updated and am testing the problem. Other than this problem, the machine is quite flawless in performance

 

Computer Specifications

- Intel Core i5-4440

- Corsair Vengeance (2)8GB 1600MHz RAM

- EVGA GTX 970SC 4GB (running nVidia Web Drivers)

- ASUS B85-E/CSM Motherboard

- TP-Link N900

 

If you need it, here's the system report page under Wi-Fi:

Software Versions:
  CoreWLAN:	11.0 (1101.20)
  CoreWLANKit:	11.0 (1101.20)
  Menu Extra:	11.0 (1102.32)
  System Information:	11.0 (1100.1)
  IO80211 Family:	11.0.1 (1101.24)
  Diagnostics:	5.0 (500.83)
  AirPort Utility:	6.3.6 (636.5)
  Interfaces:
en0:
  Card Type:	AirPort Extreme  (0x168C, 0x8F)
  Firmware Version:	Atheros 9380: 4.0.74.0-P2P
  MAC Address:	c4:6e:1f:1f:a5:36
  Locale:	ETSI
  Country Code:	
  Supported PHY Modes:	802.11 a/b/g/n
  Supported Channels:	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64
  Wake On Wireless:	Supported
  AirDrop:	Supported
  Status:	Connected
  Current Network Information:
*connected wifi network*:
  PHY Mode:	802.11n
  BSSID:	48:5d:36:3a:34:44
  Channel:	1
  Country Code:	
  Network Type:	Infrastructure
  Security:	WPA2 Personal
  Signal / Noise:	-67 dBm / -89 dBm
  Transmit Rate:	195
  MCS Index:	22
  Other Local Wi-Fi Networks:
*wifi network name*:
  PHY Mode:	802.11n
  BSSID:	5c:b9:01:2a:05:cc
  Channel:	1
  Network Type:	Infrastructure
  Security:	WPA2 Personal
  Signal / Noise:	-72 dBm / -96 dBm
*wifi network name*:
  PHY Mode:	802.11n
  BSSID:	6e:e8:f1:e0:9f:70
  Channel:	11
  Country Code:	US
  Network Type:	Infrastructure
  Security:	WPA2 Personal
  Signal / Noise:	-84 dBm / -96 dBm
*wifi network name*:
  PHY Mode:	802.11n
  BSSID:	6c:70:9f:e0:f1:e8
  Channel:	11
  Country Code:	US
  Network Type:	Infrastructure
  Security:	WPA2 Personal
  Signal / Noise:	-80 dBm / -96 dBm