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From what you are describing (at least in the second half), this is how the Global RAM cache works. if you make even the teeniest tiniest change in your comp, the RAM preview (green line) will be obliterated and so will the Disk Cache (blue line). Because AE needs to recalculate every frame all over again because of the change (even if it's just moving one layer one pixel).
Now if I read the first half correctly and you're saying the even if you run the Purge command (which eliminates the RAM preview/green line) that you're seeing ZERO hints of the blue line/disk cache or even bits of a blue line, then that is odd. I know it may sound dumb, but you definitely have permissions set correctly to write to your Disk Cache folder? And you're DEFINITELY not seeing blue lines after running the Purge command? Not just after making a change to your comp?
Thanks for the reply! Sorry for not being clear in the beginning of the post. I meant that if I move the layer and then put it back in place for example After Effects isn't using the cached frames as it should and I have to re-render the frames. When it was working I would make a change to the comp and then go back and After Effects used the cached frames and the blue line would appear. But it doesn't work anymore.
As for the permissions, I've checked under security tab on the SSD card and all type are allowed. If there's anything specific I should do/check please do let me know
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