RAM preview will not cache full timeline - AE 23.5

I have an issue trying to cache a timeline for playback.  When I hit space, AE begins to cache like normal.  I see the green line above the playhead begin to fill up, but after only a few frames (usually 20-30), the preview stops caching and just loops as if it's run out of memory.

However, I have 128GB of RAM and in previous versions I am able to cache hundreds of 4K frames without issue.  Also, if I manually scrub the timeline, it will cache the full timeline and then play back normally.

I've been able to replicate this issue on several machines.  Here are the relevant specs:

Windows 10, latest update

AE 23.5.0

128GB DDR 5.0 memory

Disk Cache is turned off

32 GB reserved for other applications

NVidia RTX 3080