Why is preview slow

The first is as described above, with the nested pre-comps. For the second, we just had two pre-comps in the main composition, each with a different animation.

And for the final test, we just put all the animated layers in the main composition very messy! Here are our results:. So, we can see from all this that using nested pre-comps is the way to go when it comes to complex animations that use a lot of layers.

Oh, and we suggest staying away from the messy comps like the one above unless you really need to. This will replace your original, heavy composition with the newly rendered video. This should dramatically speed up your originally slow preview in After Effects. A proxy is basically a lower resolution version of a still image or a still frame of a video that can be used in place of the full resolution original.

While you may not be able to see exactly what the final outcome of your composition will look like when using proxies, you will be able to swiftly animate elements and preview your composition much easier than you would when using the original footage.

To set up a proxy for video footage, open the video in Photoshop. You can then save one of the frames of the video as an image. If you wish, you could also reduce the resolution of this frame by heading to Image, Canvas Size… and inputting a new resolution.

This happens to the best of us. When a project takes a turn of direction or assets get swapped about, the project window can get jam-packed with unused assets and compositions. Luckily, After Effects has a handy command that gets rid of any unused content. This is also a great way for you to keep track of any storyboarding you may be doing for your project — just match the file names to the scenes in your storyboard. From here, you can keep only the comps, assets and layers you need in each.

With these quick, and not-so-quick fixes in place, your After Effects project should preview at a faster speed than before. If you need more help on the matter, Adobe has a lot of information on their help pages about the issue. Here Grizzle, we use a mix of predominantly After Effects and Cinema4D to achieve the looks and animation styles in our work.

You can check out some of our projects here. Extensions can be useful in many ways, but they can also slow your Mac down. Removing them can help, and you can do it manually or automatically. Check the list of available extensions and delete the unnecessary ones by selecting them and clicking Uninstall.

You can also update extensions by clicking on the Updates icon in the left-hand sidebar in the App Store. If you want to know which Chrome extensions are making your Mac run slowly, take a look in the Chrome task manager. If you have a ton of tabs open in your web browser, it can easily slow down your Mac. The more you have open, the harder your Mac needs to work. These browser tabs can eat up memory before you know it. Open the Activity Monitor. You may also find that some of the web addresses in Activity Monitor are actually extensions, rather than open web pages.

If so, follow the previous advice about uninstalling or disabling them. This opens Chrome's own task manager, where you can see how much resources are being used by each tab. Look through the list to see if any are using a lot of RAM or processing time. Macs are generally secure, but they can get viruses and other malware. Common sources are malicious websites, file sharing apps, and booby-trapped email attachments.

They might, for example, use your Mac to send out junk emails to millions of people. One way to reduce the chance of a malware infection is to limit what apps can be installed on your Mac.

By allowing apps to only be installed from the Mac App Store, you can improve your chances of staying virus-free. As well as being more cautious with file downloads, you should clear caches and run antivirus software to keep your Mac free of malware.

For more information, read our guide to checking for malware on your Mac. Alternatively, give MacKeeper a try. As well as optimization and privacy tools, it offers excellent antivirus scanning and removal. Select them and click the minus symbol. This only accounts for some of the processes that run at startup. There are also likely to be some that run in the background as well. Dealing with those is a slightly different process, though. Read our guide to changing startup items to learn more.

Eventually, they will all break down and stop working. With some components, you might get decades of life out of them. But with others, five years is the average lifespan.

Of course, how long you get depends largely on how often you use your Mac. And when hardware does fail, it can be sudden and obvious or slow and subtle. So if your Mac is running slowly, it could be caused by a component that is still partially working but which is starting to fail.

In many cases, the hard drive or SSD is what goes first. But you can get macOS to check your disk for errors. But if it only says there are errors on the disk, you can attempt to fix them using Disk Utility. Occasionally, some of the data on your Mac can get corrupted. If it finds any, it will try to fix them. In a worst-case scenario, you may need to reinstall macOS to get your Mac back up to speed.

For more detailed guidance, check out our tutorial on fixing disk errors. If they get too warm, Macs will not only spin their internal fans faster — they might also throttle the speed of their components so they generate less heat. This is to prevent parts like the processor from getting too hot and sustaining permanent damage.

Overheating is less of a problem with Mac Pros, which have roomier cases. If your computer is getting too hot, these quick ways to stop your Mac overheating might help. It might have been fine when you bought it, but newer software is generally more demanding. Older Macs can struggle to keep up.

On the Overview page, you can see some basic information about your Mac, including when it was released. Using the tips in this guide, you might be able to speed up an old Mac a bit. But eventually, its age will get the better of it. It has a memory cleaner that can clear out your RAM, it can find and remove junk and duplicate files, and it protects you from malware.

These are by far some of the most common reasons for a slow Mac — and MacKeeper can deal with them all and more. Give it a try , and see what it can do!

With over 5 years of supporting Mac users, Ruslana lives and breathes everything Mac. Tech expert, Apple lover, and well, a cutie. With jpg pictures, preview works fine as well. Question: Q: Why is preview for photos running slow in Mavericks?

More Less. Communities Get Support. Sign in Sign in Sign in corporate. Browse Search. Ask a question. User profile for user: DN DN. After upgrading to Mavericks Preview for photos very slow. What can I do? Reply I have this question too 66 I have this question too Me too 66 Me too. All replies Drop Down menu. Loading page content. User profile for user: brycesteiner brycesteiner. Reply Helpful Thread reply - more options Link to this Post. User profile for user: Carolyn Samit Carolyn Samit. User profile for user: William Lloyd William Lloyd.

Nikon Raw Open a folder of. Takes forever for them to load. Very little delay. Thanks for your reply.