Referencing @ricklinux’s offered solution here, can you now try adding these kernel parameters in the EndeavourOS Live ISO Grub menu?
Do that be pressing TAB on one of the Grub menu entries.
Edit: or e on a systemd-boot menu.
This is essentially taking the working kernel parameters from that booting Linux you got those details from, and applying it to the EndeavourOS Live ISO:
nvme_core.default_ps_max_latency_us=0 pcie_aspm=off