I know that in past versions of CQ DAM /AEM Assets, there was a limit on how many files (images/PDFs) could be stored in an individual folder before system performance was impacted (I believe it was recommended no more than 500 files per folder). In version 6.3, has this limit been increased? if so, what is the realistic limit of how many files per folder in v6.3?
This should serve as guideline Assets Sizing Guide to start with. Although usually ordered folder does have the performance overhead and should be < 1000 assets as a general high level best practice. For larger numbers suggest unordered folders only. OAK recommends to use *un-orderable* node type to scale large number of child nodes . In AEM Asset its translate to use sling:Folder node type instead of sling:orderedFolder.