It highlights a bigger problem with the Synology platform.

I decided to test the speed between my different network devices using iperf3. I suppose that's the computer's internal memory bus speed, right? Just curious. To install iperf on my Synology server, I ...

Congrats you have a Synology. I'll lay out the dead simple packages you should run. Only what you need in particular. Nobody's going to have some magic must run ...