Did you use their machine specs: 32 vCPU and 244 GB memory? The graph is pretty big for in-memory use during OLAP:
marc@antecmarc:~$ curl http://service.tigergraph.com/download/benchmark/dataset/graph500-22/graph500-22_unique_node | wc -l % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 17.6M 100 17.6M 0 0 3221k 0 0:00:05 0:00:05 --:--:-- 4166k 2396019 marc@antecmarc:~$ curl http://service.tigergraph.com/download/benchmark/dataset/graph500-22/graph500-22 | wc -l % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 989M 100 989M 0 0 5427k 0 0:03:06 0:03:06 --:--:-- 6123k 67108864