Just done a circuit and all seems in order. But it's worth remembering the external and internal models add up to a fearsome 260+Mb so it's possible it needs a big rig. Mine's AMD, Ryzen 7 5800x 8-core CPU, Radeon RX 6800XT GPU 32GB RAM. Just under a year old; my old rig would barely load it in 4.5, much less fly it in anything more than slideshow.
DaveQ