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Slow preview despite green render bar

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Andy Wölfl
Slow preview despite green render bar
on Jun 14, 2018 at 2:19:36 pm

I recently changed from Mac to PC and I am having doubts that everything is working as it is supposed to do. I am not really savy with the whole PC thing so take it slow on me.

I bought quite a powerfull machine:
Inter i7 8700k
32 GB RAM
512 GB SSD PCIe (via M4 slot for OS)
512 GB SSD PCIe (via M4 slot for After Effects Cache)
Gigabyte GTX 1080TI

My whole computer is not working really smoothly (explorer hass to be restarted mininum twice a day) and After Effects does not really give me the preformance it should.

I have a simple 2D animation project. Graphics swipe in, swipe out and so on ...
The green render bar on top rushes through the whole sequence when pressing SPACE but the preview is super slow.

Are there any suggestions what I could do to figure out what's wrong?

Thanks a lot


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Dave LaRonde
Re: Slow preview despite green render bar
on Jun 14, 2018 at 3:24:06 pm

Have you tried hitting the zero key on the numeric keypad, then waiting for the preview?

If you expect AE to behave like a video editing application, you're in for a rude surprise.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Andy Wölfl
Re: Slow preview despite green render bar
on Jun 15, 2018 at 8:55:53 am

Hey Dave,

thanks for your suggestions.
I have used After Effects now for over 10 years and had all kinds off komplex projects.
This one is fairly simple but AE has mayor problems in the playback.

Just curious, when the render bar (green) is already developed, After Effects should be able to preview in real time, right?


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Dave LaRonde
Re: Slow preview despite green render bar
on Jun 15, 2018 at 3:04:28 pm

[Andy Wölfl] "Just curious, when the render bar (green) is already developed, After Effects should be able to preview in real time, right?"

Not necessarily. Frame rate and horizontal/vertical dimensions are big factors in realtime previews.

I work at 1920x1080 most of the time, and I almost always preview at 50% comp size and Half resolution.
I check details at 100% & Full... but I don't preview.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Richard Garabedain
Re: Slow preview despite green render bar
on Jun 14, 2018 at 4:23:48 pm

I have been having the same problems..but with element 3d...but still when the line is solid green it should play back fine right? It seems to happen sporadically. but just in case make sure you have no skip frames in the preview window


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Angie Taylor
Re: Slow preview despite green render bar
on Jun 15, 2018 at 5:36:14 am

Make sure you set your disk cache to a separate hard drive from your system one. Best to use an external drive for caches. Also, make sure you have have plenty of free disk space both on the system drive and your disk cache drive. Allocate plenty of space to your disk cache but make sure you empty it regularly to keep it running smoothly.

cheers,

Angie

Angie Taylor animation & illustration for television, film, web and devices

http://www.angietaylor.co.uk
Twitter: theangietaylor
Linkedin: theangietaylor
http://www.facebook.com/pages/Angie-Taylor/118378194869002



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Steve Bentley
Re: Slow preview despite green render bar
on Jun 15, 2018 at 9:54:06 pm

As a former imbiber of the Macintosh Kool-aid, I can attest that on a PC there is lot of junk going on under the hood that is better looked after for you in MacLand. It could even be that AE is not releasing and the last instance is still using ram. (on a PC you can have multiple copies of any app running at the same time)

Use cntrl/alt/delete to check the task manager and see what's running right now (like another instance of AE). For "computer speak" items in the list you can search the web and it will tell you what those are and what they do. You can kill any process you want jst to try things out. That may give you more trouble than you would like as that process may have been important but they will all come back after a restart.

Also go to the start menu and type msconfig. This is kind of like the task manager but schedules processes to fire up on boot. So many machines (HP I'm speaking to you!) come with software installed that is supposed to help you manage the machine but instead end up gumming the works. You can turn these off to keep them from coming on at boot time. (hint: sort by manufacturer because most of microsoft's stuff, and its going to be the bulk of the list, need to be there - except Defender which should be off if you have your own antivirus app: this alone can cause huge slowdowns as the two applications duel thinking the other is virus).

Also check software that loves to update itself (acrobat is nasty for this, as is citrix). It can take huge resources to constantly go out to the web to see if there is an update available and then start installing it when you least expect.
You can turn off many of these updaters in the MSCONFIG.

All adobe products are ram hogs (they need to be) but that memory is rarely managed well by the application and that can slow things down and even slow down apps you fire up after you have shut down AE. Get used to hitting purge all while working and when you exit AE, to clean things up and speed you along.
Using SSD's can speed things up as well for the disk caches and source files.

Finally it could be the application fighting with how it has to output to your monitor{s}. Color space, size and frame rates can all affect how smoothly the running image is sent to screen. We have an Nvidia GTX 980 that shreds the image on the screen during playback and causes uneven frame rates. We have one that doesn't. So there are lots of places this could be happening.



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