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It takes me on average between 30 to 60 seconds just to get 1 regular click done in Dolphin. It ain't funny :p Darn annoying to be honest.

I'm running kernel kubuntu 6.11.0-26-generic

    # lsb_release -a 
    No LSB modules are available.
    Distributor ID: Ubuntu
    Description:    Ubuntu 24.04.2 LTS
    Release:        24.04
    Codename:       noble

The files are going from /dev/sda2 to /dev/sdb1

# sudo parted -l
Model: ATA ST18000NM000J-2T (scsi)
Disk /dev/sda: 18,0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 


Number  Start   End     Size    File system  Name                  Flags
1      1049kB  538MB   537MB   fat32        EFI System Partition  boot, esp
2      538MB   18,0TB  18,0TB  ext4


Model: WD My Book 25EE (scsi)
Disk /dev/sdb: 8002GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:


Number  Start   End     Size    File system  Name                Flags
1      1049kB  8002GB  8002GB  ext4         NicerDotApp-data8d


Model: MSI M480 2TB (nvme)
Disk /dev/nvme0n1: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:


Number  Start   End     Size    File system  Name          Flags
1      2097kB  317MB   315MB   fat32                      boot, esp
2      317MB   2000GB  2000GB  ext4         kubuntu_2404

Let me know if I need to provide more details.

NicerApp_WebOS
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  • add it to your question using [edit] - not in comments – graham Jun 30 '25 at 10:35
  • may well be quicker to do this in a terminal ... granted a GUI properly written should incur no overhead yet until then ... – John Scott Stensland Jun 30 '25 at 11:40
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    What format is partition on external drive? What speed USB port? Post this in question: sudo parted -l What file sizes? Many small files or very large files? – oldfred Jun 30 '25 at 13:57
  • Search this site for "slow copy " or "low data transfer rate" . A common problem when writes are slower than reads, system buffers fill and fragment, dragging things to a crawl. From a terminal, you can add "nocache" to prevent input buffering and use a copy program like (tar, cpio,...) that allows setting a record size (500MB for tar with nocache prevented the problem for me). – ubfan1 Jul 01 '25 at 15:28

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