Up until recently, both of my office computers have been performing well according to my needs. They were reliable machines for my tasks.

However, today, System 2 experienced a significant drop in copying speed from my internal NVMe to my external SSD. Normally, both System 1 and System 2 could copy large files at speeds exceeding 350 MB/s to the external drive. But today, System 2 was only managing to copy at a sluggish 35+ MB/s.

I vaguely remember a similar issue with System 2 in the past, where it suddenly dropped in copying speed towards the end of a file transfer. I sought explanations for that previously, but today’s situation is different. The speed started at 35+ MB/s and remained constant during a ten-minute transfer of a 17 GB file.

I investigated by disconnecting and reconnecting the external drive, changing SSD disks, and testing different USB3 ports on System 2. I also compared the performance to System 1, which maintained high copying speeds.

Despite the overall performance of System 2 being consistent with that of System 1, this sudden decrease in copying speed is perplexing. I believe I will need assistance to resolve this issue, as both PCs exhibit fast Wi-Fi and internal disk-to-disk speeds for these files, indicating a potential problem with the USB3 ports on System 2.

What are your thoughts on this situation?

​Up until recently, both of my office computers have been performing well according to my needs. They were reliable machines for my tasks. However, today, System 2 experienced a significant drop in copying speed from my internal NVMe to my external SSD. Normally, both System 1 and System 2 could copy large files at speeds exceeding 350 MB/s to the external drive. But today, System 2 was only managing to copy at a sluggish 35+ MB/s. I vaguely remember a similar issue with System 2 in the past, where it suddenly dropped in copying speed towards the end of a file transfer. I sought explanations for that previously, but today’s situation is different. The speed started at 35+ MB/s and remained constant during a ten-minute transfer of a 17 GB file. I investigated by disconnecting and reconnecting the external drive, changing SSD disks, and testing different USB3 ports on System 2. I also compared the performance to System 1, which maintained high copying speeds. Despite the overall performance of System 2 being consistent with that of System 1, this sudden decrease in copying speed is perplexing. I believe I will need assistance to resolve this issue, as both PCs exhibit fast Wi-Fi and internal disk-to-disk speeds for these files, indicating a potential problem with the USB3 ports on System 2. What are your thoughts on this situation?  Read More

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