https://www.traditionrolex.com/36
Downloading a massive file puts a continuous load on your local hardware. It stresses your Network Interface Card (NIC), internal storage write speeds (SSD/NVMe), and CPU processing power. If your download speed drops drastically halfway through a 10GB file, it often points to local hardware thermal throttling or write-buffer exhaustion rather than an issue with your ISP. Infrastructure Validation
If writing the file to a physical disk, ensure you are downloading to a fast NVMe SSD. A mechanical hard drive or a slow USB flash drive will cap your download speed artificially at their maximum write speeds.
https://www.traditionrolex.com/36