Do you have happen to have any documentation about your benchmarking? I'm also considering these options at the moment (currently using pg+timescaledb) and interested in what you found.
I just created large tables, and tried to join, group by, sort them in pg, clickhouse, duckdb, looked what failed or being slow, and tried to resolve it.
I am happy to answer specific questions, but I didn't use timescaledb.
