I have the Arctis 7 as well and the default EQ sounds just fine, although I do prefer the Bass Boost. You can run the software inside a Windows VM, passthrough the USB dongle and configure all your settings as well. They get saved into the headset and work just fine in Linux without Linux native software.
Thanks! So VRR works out of the box for you or did you have to do tweaks to get it to work? The answers on the Amazon page are conflicting, with the manufacturer saying VRR is not supported but some users saying it does. Don’t know who to believe.