Imaging Speed is limited to 50 MB/s

Hi and thank you for this tool. I've used many times HDD Raw Copy Tool successfully.

I have two SSDs and I want to create an image. Since both Source and Target are SSDs, the speed should be at least 300 MB/s - 500 MB/s. But somehow the speed is capped at 50MB/s?

I have a laptop supporting USB 3.0 and NVMe and I already achieved full speed performance with my SSDs. I am just choosing normal .img (not compressed). So I think there may be some issue with the software?

Thanks.