AE CC timeline lag & not realtime preview (Win7 GTX Titan)

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as of few days ago i'm experiencing lag when navigating around, scrubbing timeline (as in cursor movement), using keyboard shortcuts, drag selecting keyframes etc.

also ram preview shows red warning not playing in realtime.

 

this pretty new system i'm starting use in anger , has seemed fine until few days ago, , haven't updated knowledge.

i've ssd system disk, dedicated ssd ae cache, 2 x hdd (1 projects, 1 render to).

i've deleted preferences , purged cache several times , still have issues.

 

a new empty project seems fine, if make new comp , add new layer starts lag if ctrl-d duplicate layers (after 20) , try ctrl-a , expand property (e.g position p)

 

as i've been working on few proejct lots of layers on past month , not experienced lag (though have red ram preview warning)

 

 

i'm baffled has seemed fine until , i'm not aware of updating prior noticing issue.

 

any ideas anyone?

 

 

 

specs:

 

ae cc 12.2.0.52

 

hardware:

 

win7 pro

cpu - i7-4930k 3.40ghz

32gb ram

gtx titan 6gb driver 332.21

 

fast draft:available
texture memory:2422.00 mb
ray-tracing:gpu

 

opengl

vendor:nvidia corporation
device:geforce gtx titan/pcie/sse2
version:2.1.2
total memory:5.91 gb
shader model:4.0 or later

cuda

driver version:6.0
devices:1 (geforce gtx titan)
current usable memory:5.72 gb (at application launch)
maximum usable memory:6.00 gb

update: test installed ae cs6 (after i'd finally managed locate download link!) , initial tests don't result in same problems cc. (this both , without cs6 raytracer file modified accept titan).

 

i can replicated problem in cc:

 

1) new comp (1920x1080)

2) new solid layer - scrub timeline , forth, fine no lag.

3) duplicate layer - scrub timeline , forth, fine no lag.

4) duplicate layer few more times - scrub timeline , forth, start notice lag

5) repeat duplicate layer , i'll start getting delay in duping process.

6) 30 layers , lag increases - scrub timeline , forth, noticeable lag.

7) ctrl-a (delay), p (delay), click keyframe (delay) scrub timeline , forth, noticeable lag.

 

this has made cc pretty unusable, fine (bar occasional slow ram preview playback) few days ago!

 

please don't tell me have roll cs6....

 

is right place report issue? anyone?



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