Jerky stuttering playback even if cached from SSD. I know AE is not a NLE. I really need help.

[flowsnone]

Hello Folks,

I've got a very serious issue and really need your help. I've got a very basic setup that is reading some .AI files with normal resolutions and my playback is stuttering, even when the whole work area is cached to my m.2 SSD which can read/write 1200mb/s. Please have a look at the attached video.

Dropbox - Adobe After Effects CC 2018 - laggy.mp4

Here are my specs:

win10 pro build 1803/1709

64gig ram

Intel 6900k

Asus X99 Deluxe II

Asus GTX 1080

I've got the latest drivers and bios for all my hardware installed. Also I did reinstall a completely fresh windows 10. I even tried the brand new build 1803 and the 1709 build. Same result on both.

I'm using one 4k monitor at 150% scale and one 2,5k monitor at 125% scale.

My playback will only run at realtime when i make the comp window very small so I can not see anything.

Edit: I noticed one thing. When I unplug my second monitor and put the scale of my main monitor(4K) to 100%, then it's playing back just fine in any window size. It does not playback in realtime when there is any scale other than 100%. But On a 4K monitor at 100% I can not see or read anything because its so small.

Is there ANYTHING I can do? Please, I can't work like this.

[flowsnone]

Maybe Adobe should hire people for support who do understand what programs they are troubleshooting:

(all he did was clear the cache, reset user prefs and then activate raytracing option in GPU settings lol)

[Roland Kahlenberg]

Your initial post made it quite clear this was an issue related to monitor scaling. File a Bug Report.

[flowsnone]

I did, and I did half a year ago as well, but since Adobe seems to work on bugs only when they get enough votes, I have to generate a little heat here ;-D

[Roland Kahlenberg]

But you're generating your heat at the wrong spot. You would have done better if your Post Title was specifically relevant to the issue you want rectified.

[P.M.B]

Well I hope Adobe fixes whatever it needs to fix so you can get back to work.

[Andrew Yoole]

Frustrating, I completely understand.  But clearly, for the time being, the issue here is resolved by returning to 100% scaling while you work. 

My gut feeling is that this is some kind issue relating to your GPU and the way Windows processes its scaling.  What happens if you run your second monitor as an AE video display only, at native resolution?  Is it possible to swap out your display card for a different card to see if the problem is resolved?

Another workaround might be to run a dedicated i/o device, like a Blackmagic Intensity or similar, to drive a dedicated preview display.

[jguerro]

This is my solution - even with scaling turned on to 125% on a 4K display in Windows 10. >  CHange High DPI settings > see attached picture / only exact this settings worked - others not. Acceptable downside is: the interface looks a bit blurry... so i change this settings, when working heavily with audio syncing.

[Roland Kahlenberg]

I believe what this setting does is to force the OS to work at only 100% scaling when AE is the active application. So, it does seem like an issue related to working with scale values other than 100%.

[Nick Woythaler]

jguerro - This solution worked for me.  Thank you.