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Laszlo Perry
I can't think of anything that I've changed on the machine to have caused this. It worked fine for the longest time. I tried clearing out temp browser files, reinstalling the silverlight plugin, rebooting, etc. and nothing helps.
Video by nature is CPU intensive, that being the case it's not surprise Netflix is using a lot of CPU. As for making your system unusable, things I'd look at are the amount of RAM in the computer. You didn't mention which iMac you have but one thing to look at is is open Activity Monitor - System Memory and check the amount of Free RAM. As a general rule of thumb if it's 500MB or less your system could probably use a RAM upgrade. Do this when running Netflix or when you see a system slow-down.
I have the same problem with the exception that I'm not looking at a video, I am simply watching the Netflix web site, and I'm using Linux Mint 17.1 . I've watched the top process (system monitor) and loaded the Netflix web page and the web content process goes through the roof (over 100% cpu usage). When I kill the web content process, only the Netflix tab (in Mozilla Firefox) dies and all other operations do not appear to be affected.
This behaviour has not always occurred and appears to have just recently started to happen, within the last few days. This behaviour makes my computer virtually unusable and until I am able to stop it from happening I will not be starting the Netflix web page which is a nuisance because I use it to look for programs that I would like to watch on my smart TV.
Thank you for the reply. I understand the video is CPU intense, but my point was that something has recently changed because just weeks ago I was able to do the same activities (netflix + other apps running) without the maxed out CPU.
Were you running Netflix when you had 1.68GB free? To be honest 4GB isn't that much RAM these days, so you may want to still consider upgrading it. It's inexpensive if you buy from reputable sources such as www.macsales.com (OWC) or Crucial. Do not buy RAM directly from Apple!
You can also do some other resets but I don't know if they will affect your situation. You can reset both the SMC and PRAM, it not a bad idea to each reset 2x. Please follow these instructions closely:
I've tried running netflix on internet explorer running on a virtual machine inside VMware fusion. the free memory goes down to 100megs (definitely need to do that memory upgrade) but even running it that way the osx apps are more responsive and it's using less CPU than if I ran netflix inside safari. Something isn't working right.
Here's the link to what fixed my problem immediately. Please note: my problem was resolved following just the three steps pasted below. The original link has additional steps that may be necessary, although I did not employ them, and my problem of 100% CPU USAGE is gone!!! Thank God!
I haven't tried Bethesdas steps yet, but I figured I would mention that within the past couple of days Netflix has been doing the same thing to me. I don't have an Apple computer, but this is the only post anywhere I found about this.
So usually when watching Netflix I'm only running about 40% cpu (I believe), but now suddenly it's running in the high 80's up to 100. The only reason I noticed is because suddenly now when I go to a different tab, the video stops and starts buffering, but can't buffer all the way up until going back to the Netflix tab. This is really annoying, by the way. Also, now about 50% of the time when I open fullscreen, everything but the audio stops, so I have to exit fullscreen and then go back in... Also the video is starting to get a bit choppy which is what prompted me to start looking for an answer.
I have noticed this as well. The Silverlight plug-in didn't used to take up all the CPU usage. Oddly, if I go to full screen mode (I have dual monitors) I can see the CPU usage drops to about 50% exactly the opposite of what you would think should happen (More pixels are being pused to the screen so it should run slower) I think this is an error in the way the Silverlight plugin handles video on the Apple OS.
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You might be outraged that the download of Netflix videos is not progressing while it can stream flawlessly over the same Internet to the same device. The problems of downloading Netflix too slowly don't only lie on the Internet.
If you want to download Netflix videos on your laptop as soon as possible before you get on the plane the next day, please walk through the following post, it will show you 6 simple methods to make Netflix download faster, ranging from using common troubleshooting methods to the versatile MovPilot Netflix Video Downloader.
When you encounter any problem with the Netflix downloading service, you should pay important attention to checking if the Netflix server is experiencing interruption by clicking Netflix's help page, which will show you the current status of its server.
Sometimes the older version of Netflix can lead to unexpected problems. Therefore, it's time to update your Netflix app to the latest version, which can fix these errors and bugs. After using the latest version of Netflix, Netflix's download speed may be improved to some extent as you desire.
Increasing your network speed is an important procedure that will assist you in making Netflix downloads quicker. The problems that cause poor Internet are various, and the corresponding solutions are listed below to enable you to get a more stable and rapid Internet environment for Netflix episodes and movies.
To ensure a good internet connection, you can check your internet speed through a third-party website, such as Speedtest.net. If the download speed is too slow or fluctuating too much, restarting the router may help.
You can reboot the router by unplugging it and plugging it in again. Pressing and holding the reset button will also work. Then, try to download Netflix movies once to see if it is effective at improving your Netflix download speed.
Generally speaking, your Netflix download speed will be influenced if multiple devices are connected to the same Internet as yours. What's worse, when other devices start downloading files, your device's downloading speed slows down considerably. To speed up your Netflix downloads, please limit the number of network-connected devices and ensure no redundant devices are impacting the download speed.
Excessive background apps can also slow down the loading speed of the internet. To avoid this unnecessary factor influencing network connectivity, you can shut down the apps you don't need to use in the device's background, reducing the burden on Internet performance.
Downloading high-definition Netflix video will be difficult if your device is under a poor network connection. In this case, to download Netflix quicker, you have to change the video quality of the downloaded Netflix shows. By altering the video quality from High to Standard, the Netflix download speed will be raised and it will save much of your time.
This method to speed up Netflix download performance is not so good for sacrificing video quality, leading to a worse streaming experience offline. Fortunately, there is another way to help you improve the downloading efficiency while retaining the high definition for Netflix downloads at the same time in the last part. Please keep reading.
When the network connectivity of your device is detected to be good, but Netflix download still functions at a slow speed, you may consider whether the problem is caused by your ISP. ISP refers to an acronym, whose full name is Internet Service Provider, and it may limit the downloading performance of Netflix to cause slow Netflix downloads.
Therefore, you can try overpassing the connect limitation borough by ISP utilizing a VPN, which can help you hide your online data and traffic from letting ISP know what you are up to. As there are many reliable VPNs provided online, simply select one and connect to make Netflix download faster while trying to process any video download within the app. ExpressVPN is a good recommendation for Netflix.
But it is important to note that, the distance between the VPN server and your location may influence the downloading performance. Further distance may lead to slower downloading speed. What's more, under an unstable network connection, using a VPN may make the situation even worse. Using a dedicated third-party Netflix video downloader, like MovPilot, can offer a much more stable and smooth downloading experience.
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