I have not heard of anything quite like this.

One thing you could try that would bypass the internal network card is an external one. Get a simple USB to Ethernet adapter and try that. I have one that I got when I couldn't stop my internal network card from causing massive interrupts in music programs. DPC Latency Checker went through the roof until I took that card out. You could also try running the DPC Latency Checker and see if there is some other driver causing conflict that has the effect of slowing your network speed.


BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors