If Yes, then why does it limit the files size as Knowledge base.. If no, then.. is there a solution to upload more files as knowledge base and still not face the agent lag during conversations?

upload the file per piece, so that if the user query something that relevant to a specific piece of file, it will just use that file.

But why 1 MB size warning everytime we upload a file? Why does it have to slow the agent responses? Is it a tech blocker as of now?