I have a very big problem !
My PC specs are : 64gb RAM , core i7 6850k, GTX 1080 Ti 11gb, 500gb SSD ,Windows 10 pro
I Have After Effect 2017.2
My problem is that when I'm working on a video or something i click on space-bar (to preview my work), But it doesnt start normally it usually tells me that the FPS is 15 fps and it lags too much!
Although i give the adobe applications 50gb RAM and I enabled CUDA for GTX 1080 Ti with 8gb of Texture Memory and Ray Tracing is on GPU and Disk Cache is 100GB
Please Help me!!
I think the only big problem you have is lack of AE knowledge.
First, you can NEVER expect to work like a video editing application, where you just press the space bar and everything plays back in real time. AE IS NOT A VIDEO EDITOR. It's an effects, compositing and motion graphics application, used for very different purposes than a video editor, It functions differently than a video editor. Particularly in the way you view your work -- you don't play, you PREVIEW. tOTALLY DIFFERENT.
I encourage you to go to AE Help and look at the section on Viewing and Previewing. There are a WHOLE lot of ways to preview that can help.
A good deal of quality time spent here won't hurt, either.....