TOPSAR Deburst data preparation for PSI analysis

I,m preparing data in SNAP for PSI analysis. I have downloaded 17 SLC-1 images, applied following steps:
1- TOPSAR split and precise orbit on all the SLC data
2- Finding the master SLC
3- Making a Stack by back geocoding from the processed data
4- TOPSAR Deburst
During TOPSAR Deburst, It has been about more than 40 hours running time but could not finish it yet and no change in writing target product as shown in first figure. kindly guide me how to solve this issue. I have tried this step two times but could not finish it, Thanks for response.

How can Disk be at 100% with 2.1MB/s write speed?