Issues I am having with 6K BRAW in After Effects on my aging iMac Pro

So I am in the middle of making 2 short films shot on my BlackMagicDesign 6k Pro, and I am shooting in 6k 23.976 Blackmagic Raw Constant 8:1, and both have serious visual effects. And I have been having issues with running out of memory in After Effects.

Now my machine is getting old, it is a an iMac Pro with the upgraded Radeon Pro Vega 64X with 16 GB of RAM, but I only have 64 GB of DDR4 RAM, which I am thinking is the main issue. And I am running of a RAID 5 with 36 GB of mechanical drive space, which has at least half empty. And I have even moved the After Effects Disk Cache to a fast external SSD with a 250 GB cache.

For BRAW support I am using the amazing BRAW Studio from Autokroma. This plug in really is great in Premiere Pro because it allows selection of multiple BRAW clips to allow editing if they are all shot the same, and also to save out a sidecar file easily so any program can see what you have done. It works in Premiere Pro and After Effects and replaces Blackmagic’s BRAW plugin which has more limited functionality.

Still using this I do seem to be having RAM issues with RAM previews where my RAM is running out very quickly and won’t render out a whole shot. I find myself having to restart after effects to get a longer RAM preview, and many times even a computer restart.

Now I am also doing a lot of green screen and using Maxon formerly Red Giant’s Primatte Keyer 6 to key, so that might be also a RAM hog here. I have never had an issue with 4k Alexa ProRES footage in green screen though.

I tend to think it might be the BRAW , as on some shots I used BRAW Studio to do the initial grade and save out a sidecar, and then render them in Media Composer in ProRES HQ. With this footage I get much longer renders. Now I know it is less compressed, as the files are larger, and with the LUT added, there is less to decode, but this is very drive intensive.

And sure the 6K is bigger than 4K, and eating more RAM.

And the new M1 chips with ProRES processor wouldn’t help here, because it is BRAW, and 128 GB of shared memory and video memory doesn’t seem like a whole bunch more.

I am hoping the whole lesson isn’t that BRAW 6K is just too processor intensive.

Does anyone else lament the loss of Red Giant’s Keying suite from the VFX suite?

 

Now it isn’t like I don’t love the Red Giant VFX suite, but I have been a Red Giant user for many years, and I miss all the tools of the Keying Suite. 
Now I am not complaining about Primatte Keyer 6 which is included in the Red Giant VFX Suite. It is very powerful and easy to use, though since Primatte 5 doesn’t really seem to work with 2020 or Beta it had better be good, but I do miss all off the ancillary plugs ins of the Keying suite, and I do know that many of the effects have been incorporated in SUPERCOMP, but I want all the controls of the individual plug-ins again.
I will admit that I am using keyers in a different method than most, as Primatte works great for a standard green screen (which I am using as well), and I find it vastly superior to the build in Keylight. The thing is I am doing puppeteering and using a green glove to puppet a teddy bear, so instead of just the green, I want to expand the green beyond the glove, instead of objects inside the green screen. And yes I can do that with rotoscoping, but that kind of negates using a green glove as I have to animate every frame.
And I have to admit I had an easier job doing that when I had the tools all in separate plug ins. I miss the key correct plugs in. I miss seperate versions of Alpha Cleaner, Light Wrap (which I know is in SUPERCOMP), Matte Feather, Smooth Screen, Spill Killer (I know this is in Primmate 6) and Wire/Rig Remover, which is more what I am trying to do. And yes I still have the old plugins, but they really don’t work in After Effects 2020.
Now I know I am using the plug ins out of their comfort zone, but using the separate plug ins I was much better able to do what I wanted to, and with Primatte 6 only having some of the plug ins integrated I am not as happy with what I can do.
And that is beyond the whole SUPERCOMP not working with Motion Blur thing which really needs to be fixed.