Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is anyone having severe audio and video lag with this product ??
Document: Watched a streaming movie with no lag in video or audio. This is exactly what i was looking for. For the price, this is well worth it. I am really happy about it so far.
My findings? No error at all. It was seamless and worked absolutely perfectly. The audio was as crisp as the tv could put out and the video was spot on. No delay. I know people are worried about the lag between the laptop and the tv and there may be a half of a second lag at best, but I used this device to have a second monitor to watch everything on while still doing work on my laptop.
I bought this product. the video works but sometimes it lags if you are streaming movies on it. the audio feels like it's being compressed to the lowest quality. the mouse also does not appear on the HDTV.
Unit seems to be able to receive the signal very well. Excellent picture and audio. Very little lag on the signal.
To my surprise--everything worked. I was duplicating my laptop screen on my 60" plasma! Audio and Video worked great.It was a shame that it took so many tries to get right. Had this worked right out of the box this would have been 5 of 5 stars!
I would highly suggest it to anyone that has an Intel WiDi connected device that has the appropriate hardware to support it (Do some research first, not all computers can use WiDi, make sure yours can), then this is the product for you.Five Stars.
You have the option to use your own RCA/composite (red/white/yellow) cables if your TV has no available HDMI ports, but HDMI is better.Performance (5 stars):This device pushes audio/video from your laptop to the TV, i.e., what you hear/see on your laptop is played/shown on your TV. The device also supports dual monitors, if you know how to do that.
I can stream Blu-Ray movies from my laptop to the TV without any choppy audio/video quality.The latency is 200ms or less, i.e., when you move your mouse on the laptop, it takes 1/5 of a second to show the movement on the TV. This is excellent for viewing and sharing photos, YouTube videos, or streaming movies to a big screen TV.
There is about a 2 second lag between laptop and TV screen which makes mouse control difficult. When used for video playback, there is serious frame drop issue even when the Belkin box is only one foot from the laptop making it difficult to enjoy unless you don't mind choppiness of the video. In case you're wondering, I am using HP Pavilion dv6 with an i7 (8 processor) CPU, 8 gig RAM so my laptop is not slow.
Product was shipped promptly and setup is a snap. It performed flawlessly with no lag. I leave power on so startup is as fast as the computer can load intel's software. Highly recommended.
Answer: My Screencast works fine under Windows 7 but disconnects after 30 seconds or so on Windows 8. Be sure you go to the Intel website for WiDi and download the correct and latest drivers.