Ubuntu boot delayed by ~30s due to non-functional RTX2060 USB controller

In Windows, open the device manager and look for the USB host controller, then check its state.
On the product page you linked to, ->Support, there’s a new vbios available. At least for rev.2 of the card. Looks like the revisions can be told apart by the location of the display connectors.
I also checked the logs of a Zotac RTX 2060 without USB-C connector and on that card, there were no problems in regard to the USB controllers.