For maximum performance, Ethernet is recommended. The Ethernet on SHIELD TVsupports 10/100/1000 Mbps. Once Ethernet is connected, SHIELD TV will disable Wi-Fi and switch to Ethernet.
For networks which don't support DHCP, the IP-related settings can be configured in Settings > Network Settings > "Ethernet."
For the best Wi-Fi experience, a 5 GHz dual-band 802.11 AC/N MIMO router is recommended. These routers are capable of operating in the 5 GHz band to prevent interference due to 802.11 wlan/non-wlan wireless radio sources that operate in the 2.4 GHz band.
When setting up your Wi-Fi, it is recommended to scan the wireless environment and choose a less "congested" channel for the AP on either band. Configure the AP in "Auto" mode and "Auto" channel width (This field has different names depending on the AP vendor. Some call it "up to speeds" or "supported speeds."
There are various factors that affect video performance.
Use of an AV Receiver with HDMI for video and Toslink for audio may result audio lagging behind video. To adjust the AV Sync on your SHIELD, follow these directions.
Note that this tool is effective only when SHIELD TV is connected to your AV Receiver over HDMI (i.e. audio/video over HDMI); it is not meant to be used when a headset is plugged into SHIELD Controller /SHIELD Remote or USB audio device or Bluetooth audio device.
If video lags behind audio (i.e. audio is ahead of video) then use your AV receiver’s settings to delay audio.
If your network bandwidth is not enough (lesser than media bit-rate), you may experience frequent “buffering." This “buffering” may result in an animation such as a “spinning wheel”. This leads to a pattern of stoppping/resuming of video playback. This is called stall. For best results use Ethernet connectivity or for Wi-Fi use an 802.11ac Router/Access Point.
Stutter and Judder
When the TV refresh rate doesn’t match the video frame rate you may see “jumps” or “hops” in video at regular intervals typically when the scene has panning motions. This effect is called judder. This is not random stutter, but a skipping at regular intervals (milliseconds or seconds). For best results, use TVs with a refresh rate of 60Hz (120Hz or 240Hz).
Random pausing of video is called stutter. Please note this is random and not periodic in nature. Typically one sees a pause with audio resuming normally, followed by few frames getting skipped to catch up with audio.
To get the best video experience, modern TVs have an internal algorithm with the capability to understand the cadence of raw video frames provided from “decode” capable sources. The term for this varies, depending on the TV manufacturer (like “natural motion smoothening” etc.). In technical terms it is termed MEMC (Motion Estimation Motion Compensation).
Consider enabling or disabling MEMC setting to see if there is an improvement in performance.
a) MEMC is referred to as “Motion Plus” in Samsung TVs
a) MEMC is referred to as “TruMotion” in LG TVs
3 Other brands: http://en.wikipedia.org/wiki/Motion_interpolation
To control the power and performance options for your SHIELD TV go to Settings > System > Processor mode and choose either "Max performance," which is recommended, or "Optimized," for a cooler and quieter experience.