@Philbert thanks for the suggestions. The NIC negotiated speed doesn't change on any of the three affected devices. Stays at 1Gbps. So it's the throughput that drops to 100Mbps. I agree it's a...

Hi, I'm having intermittent network issues that I am having no success in troubleshooting myself. I am using a mixture of TP Link Gigabit Switched and Deco M9 Plus in my network. The PC and Laptop...