Netgear XR500 speed throttling

[Grey]

Hello, for a long while now my speed on LAN and WiFi have been very very slow, i used to get 500mbps download and around 30mbps upload before upgrading to a 1gig plan through my ISP, now I can barely install small updates without having to leave my PC on overnight, I've turned off QoS, redid the setup after factory resetting 6+ times, called my ISP, tested my modem via ethernet and updated/downgraded to various different firmware versions I'm lost on what todo, attached will be my speed tests on LAN, both WiFi bands and LAN connected straight to my modem. Currently all settings are default besides QoS is turned off.
ISP: Spectrum
Modem: Arris Surfboard SB8200
Router: Netgear Nighthawk XR500

[Netduma Fraser]

Which test is which? If you're not getting your speeds directly connected to the modem then there isn't anything the router can do, you'll need to sort that with them first