I have followed all the steps to enable PSO caching. I am running Android 13 on a Pixel 7a.
However, the Saved/CollectedPSOs folder is not generated. Instead I get a file named VulkanPSO.cache.13b5.a8620004 under Saved folder directly. I have tried all available settings and combinations that I could find online and the only available Youtube vids on this. The issue is that the ShaderPipelineCacheTools is not able to process the VulkanPSO cache file for expansion as indicated in the batch file. It causes Unreal to crash - Nowhere in the documentation it mentions about this file being generated but it would be good if it at least worked.
The same for me for 5.2 on Samsung Galaxy S10, only VulkanPSO.cache.13b5.72110000 file generated under Save folder. CollectedPSOs folder was not generated at all