Thanks for the Question. Reading about Jumbo Frames: the higher Jumbo Frames may not detect errors via CRC as well. To mitigate that we want an error free network as much as possible. The 2 Meter Cable CAT 6 Ethernet Cable is that sweet spot.
If you insert an Ethernet Switch, I recommend the CAT 6, 2 meter cables to ALL ETHERNET CLIENTS, 1Gz and up, on a large size JUMBO FRAME NETWORKS.
I’m amazed and how much an ethernet switch optimizes my home wifi mesh nodes.