USB -C Slow Speed

Hello! I have Macbook Pro 2019 and i check speed with Black Magic on external ssd and i have 1000mb/s read and write.When i put in hackintosh with usb c i have only 400mb/s read/write.How to fix this???

Motherboard: Gigabyte B360M

CPU: i7 8700K

gpu: rx580

Please help me i need a full speed on usb ports.

submitted by /u/rmihai81
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