Try to create proxy files for these sequences. 5.5K files demand very high bandwidth for preview. Select the footage in the Project Window and go to File > Create Proxy > Movie. You can preview the proxies in realtime.
Your problem is as old as the hills. 'Twas ever thus for AE. Read up on viewing and previewing.
And keep those fingers off the space bar!
For some reason, I'm not allowed to edit my post.
There are many strategies AE practitioners must use to get a real time preview -- reduce comp window size, reduce comp resolution, preview every other frame, use the region of interest... and perhaps a combination of them, depending on the circumstances.
For the past twenty-plus years, people have been using them. They have to. This ain't a perfect world, and for After Effects, that goes in spades. Learn previewing previewing strategies and know that no amount of ranting or pouting will change how the application works. People get used to it. You will too. Or you'll find another application to use.
I would recommend you set faster cache disk to preview it. SSD or Raid is preferable. Please check your cache disk setting.
Preferences > Media & Disk cache > Disk Cache and Conformed Media Cache
Thanks Guys for sharing your solutions, But neither of the above mentioned solutions have worked & i still can't have the Full Resolution Preview available. The reason that i want this, I want to render out my Timelapses as a 4k file & create some movement in AE. In order to do that i need to have a clear preview @ 4k & since my sequence is about 5.5K resolution I can create some camera movement with the resolution left.
i still can't have the Full Resolution Preview available. The reason that i want this, I want to render out my Timelapses as a 4k file & create some movement in AE.
You may need better and faster hardware to preview such files. Sorry. Using lower resolutions in part of using After Effects. You can always render out the higher resolutions. Let us know if you need assistance with that.