Here is the setup I have and I’m get around 350mbps....

OTG CABLE: https://www.amazon.com/Adapter-Streaming-Logitech-Keyboards-Nintendo/dp/B07ZF6KSTR

USB hub with Ethernet Jack: https://www.amazon.com/Anker-Gigabit-Ethernet-Converter-Support/dp/B014ZOJX7W

Thumb drive: https://www.amazon.com/SanDisk-Ultra-Transfer-Speeds-s-SDCZ48-016G-UAM46/dp/B00KZIXSP6

Ethernet Cat6 cable: https://www.amazon.com/Mediabridge-Ethernet-Cable-Feet-31-299-10B/dp/B006JN6PL0