OS
Calls die on the upload side more often than the download this piece leads with. A git clone fills the down pipe. A backup or a camera fills the up pipe, and that one is usually the narrow checkout. Cap upload a notch under the modem's real number before SQM, or cake just shapes a fantasy rate. If the stutter is only in the far room, the queue is the radio, not the ISP. Ethernet to the laptop tells you which one in a minute.