Hi Mayuri Shah ,
Welcome to Microsoft Q&A platform and thanks for posting your query here.
I understand that you are facing performance issues while trying to copy data from Az table storage to ADLS gen2 using copy activity via Azure IR .
As you mentioned, comparatively, earlier last week it was taking lesser time. Could you please check if there is significant increase in the volume of data getting copied as compared to last week? Kindly check the copy activity output log and see the datacopied size and compare .
Also , is there any configuration related changes that were made in the recent times like changing the DIU, or DOP ? Kindly check.
Additionally, what is the region in which ADF is provisioned, I would check if there is any ongoing outage or any service health impact in that region in recent times.
Looking forward to your response. Thankyou