The max speeds you get from non-gigabit adapters are 95 Mbps and within your internal network limited to 12 MB/s. 12 MB/s is painfully slow.
I have 300/150 Mbps broadband internet, and all speedtests using the gigabit ethernet adapters reach that. In a few tests I got over 100 MB/s by sendind a file between my PC and this iPAD.
So in terms of speed the BELKIN F4U047BT ethernet adapter
The Belkin USB 2.0 Ethernet Adapter provides instant connectivity to a 10/100 Mb/s network or DSL modem through any USB port, making it an essential tool for fast and reliable internet access. Ideal for both Windows and Mac OS users, it allows for seamless sharing of high-speed internet, files, p...
www.amazon.com
+ this one from Apple:
Lightning to USB Camera Adapter lets you import photos and videos from a digital camera to your iPad. Get fast, free shipping when you shop online.
www.apple.com
Are both awful. The issue I explained before (not being able to assign an automatic IP) was about these two.
Also note this BELKIN non-gigabit ethernet adapter + the Lightning to USB 2.0 Camera Adapter (from Apple) combo don't require any external power. That's right, it's just plug and use in my IPP 10.5.
That's the only advantage it can offer.
If you want gigabit speeds with these old devices you need to use another combo:
Transfer photos and videos to your iPad Pro with Lightning to USB 3 Camera Adapter. Buy now with fast, free shipping.
www.apple.com
The "Lightning to USB 3 Camera Adapter" and the Anker ethernet adapter:
Anker AK-A7611011 USB to Ethernet Network-Card Adaptor - Wired - 1000 Mbit/s - Silver
www.amazon.co.uk
Not only that, you'll need to plug both into an external power.
It's not worth the hassle if you are using the new (gigabit) ethernet adapter with the new iPADs, if I am not mistaken you only need this USB-C and no external power is required.
Just plug and start using.
My point about flat ethernet cables was that the round ones are very thick and put too much pressure over fragile adapters that tear much easily if you keep moving these cables all the time. Within a few years you'll need to buy another Apple adapter, if (of course) the one you are using is cheap in terms of being too thin.
But that can happen with any cable, of course. I had to replace my DS4 (joystick) USB one, too, after a few years.
With flat cables the weight is reduced, and so is the impact over these ethernet adapters.