Inconsistent Data Upload and Processing on Azure

I am experiencing inconsistent behavior while uploading and processing data on the Azure portal. I have two functions in one function app: one is an event-based trigger, and the other is a queue-based trigger.

I am uploading data from NAS to an Azure storage account. When a new blob is created, the event-based function is triggered, and it stores data in the queue. The queue-based function then processes one message at a time.

I initially thought that the issue was due to the consumption plan, which could cause timeout errors when uploading bulk data. However, I am seeing timeout errors even for single file uploads.

Why is there this inconsistency in file processing? I need help to resolve this issue.