so keep ahci enabled, secure boot disabled, and set fast boot to minimal, since you say you cant disable it…
and try booting into the live usb with this parameter:
ibt=off
here is a link where you add it when booting live usb;
if its again slow, dont bother with install, but download the latest iso from here: 202212061117 - download both zip files, merge them, and use Ventoy to flash the iso and try again - also add the ibt parameter with this iso too …