You havent said what Hub model is it - Hub4 or 5?
500 on wifi is about maximum possible for a Hub4 - as its wifi5.
See this excellent thread with good examples of maximum theoretical wifi speeds on wifi 5 with different “parameters” varying.
https://community.virginmedia.com/t5/Tech-Chatter/Useful-chart-to-show-why-you-will-not-get-1G-on-Wi...
A Hub5 (wifi6) will go a bit higher - but only if your device is Wifi6 enabled - are they?
For close to 1GB speeds you have to be on ethernet cable connections
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired, 1 WiFi, 1 on PA) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On 250Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.