Azure Blob Node - > uploads get mixed up when using two or more simultaneously

Hello. I am using the Save Blob Azure Node to upload incomind data every 5 seconds. The data is processed differently in 3 different nodes, and all of them upload the data at the end. If two of the nodes reach the "Save Blob Azure Node" at the same time, sometimes only one file gets uploaded. Sometimes the file from Flow 1 gets uploaded through the Save Blob from Flow 2 (therefore, it gets uploaoded to the wrong container). Can someone tell me why this happens? For now my solution is to add delay nodes but it is very complicated when testing many flows at the same time. Thanks.