Please fix RAM/Cached Preview
Please fix the very temperamental and broken cached (formally RAM) preview. It works perfectly well in versions up to and including CC2014 - 100% solid and reliable every time as you’d expect in a shipping product. What happened with CC2018?!? Surely this is an absolutely central function? I use it all day every day: preview, tweak, preview, tweak, preview, tweak. I constantly end up having to purge all or restart AE to remedy it. How can it be so broken for so long?
The latest (November 2019) release of After Effects includes major improvements to our preview architecture. You should see reliable, real-time playback of cached frames.
Mark Van Nostrand commented
Love the app, but this bug is frustrating. My variation is that the preview cache continually has to rebuild after running through it fully-- like it forgets what it just cached. It will seem to successfully build a preview cache, and just when it seems like I can preview it real time-- it will have gaps in the cache all through the clip, and will have to run it through again-- only to have it find other random gaps that have to be rebuilt again elsewhere. It rarely completely builds a preview-- is an endless repeating thing. I end up having to render the video, and see it that way. Is there a setting to remedy this, or a bug fix on the way? Thanks.
Having this same issue here. I am unable to get full fps playback for a single layer composition with a ProRes file. The file is 59.94fps and I can get about 20fps with the RAM preview. No effects applied at all.
NVIDIA RTX 2080Ti
AMD Ryzen Threadripper 2990WX 32-Core Processor
64.0 GB RAM
I have the same issue in all the workstations I've tried in... Only restarting AE makes RAM preview fast again. Sometimes it takes just 1 minute to go slow again and have to restart the software constantly, or RAM preview goes too way slow.I usually clean cache, so I can't understand. Also my workstations are very high end, so it's clearly a bug...And according to the guy commenting, how can an HDMI cable make that difference? And what it's more important, if I solve my problem restarting, which role does the cable play there?
I changeHDMi Cable to Thunderbolt cable and it works!!!
Now I'm using my MBP closed with external 4k monitor and external keyboard, mouse...
The preview is OK
I made a test...
I have a
MacBook Pro (Retina, 15-inch, Mid 2014)
2.8 GHz Intel Core i7
16 GB 1600 MHz DDR3
NVIDIA GeForce GT 750M 2048 MB
I'm using my MBP closed with external monitor Samsung 4K and keyboard.
When I extend my screen for all monitor 4K area the audio preview is TOO SLOW. If I resize my screen like a 1920x1080 = 1/4 4K the preview back to normal. Probably HDMi transfer speed.
I have a a Hi speed HDMi cable