Notebook is an Intel ICore i7 with Ubuntu xfce 23.10 installed and running MultiWriter to create a bootable Fedora xfce 39 usb stick.
I tried with Startup Disk Creator, but I couldn’t change the .iso file on the menu, so I turned to Multiwriter.
I also created a bootable Linux Mint 2 weeks ago with a macOS 12 and OCLP (open core legacy patcher) and IIRC that was much faster than with Linux. Is macOS faster creating bootable sticks?
I think that’s just hardware limitation. My USB2.0 sticks get 10MB/s and USB 3.0 get around 20MB/s
For faster stuff get a SSD with USB adapter