Google TV streamer 4k not getting gigabit speeds

Hi all, I don't know if this is the right subreddit but I have a 5gbps plan and using the same ethernet cable as the one on my PS5, which has a gigabit port as well, I'm only getting about 300+mbps on the streamer while my PS5 constantly gets 900+mbps close to 1gbps. Is there a way to increase it? I'm worried that 300mbps isn't good enough for streaming 4k remuxes.