When using Select Subject on device, memory usage increases by 2-3GB per image

Device-mode Select Subject appears to leak retained memory by approximately 2–3 GB per image, even on small images around 1500–2000 px on the long side. 

Photoshop memory is limited to ~35 GB on a 64 GB Windows system, but once the retained memory reaches the Photoshop ceiling, the entire machine becomes nearly unusable despite apparent free RAM remaining.

Cloud mode behaves differently: memory rises during Select Subject, then partially drops, and accumulates much more slowly. This strongly suggests the issue is specific to the local Device processing path rather than the images or action.

Edit > Purge > All does not release the memory.
Closing documents does not release the memory.
Only quitting Photoshop clears it.
After several images, Device mode begins falsely reporting that no subject/object can be found.

This makes batch editing workflows a joke, because after 5 or 6 images using on device, the Select Subject starts reporting it can’t find subjects, even though they are there. And then it will bring the machine to its knees.

Adobe Photoshop Version: 27.8.0 20260610.r.13 4081857  x64 (final, Release)
Operating System: Windows 11 64-bit
Version: 11 or greater 10.0.26200.8655
System architecture: Intel CPU Family:6, Model:6, Stepping:2, AVX2, AVX-VNNI, HybridCPU(8:12)
Physical processor count: 20
Processor speed: 3878 MHz
Built-in memory: 64792 MB
Free memory: 43335 MB
Memory available to Photoshop: 50810 MB
Memory used by Photoshop: 73 %