Hey Henri K.!
After looking into your issue, what we found is that today's runs are on prod_moder while the previous faster runs were on dev_moder with a significant difference in rows being scanned. If you have any successful *kpi table insertions on prod, could you point us to a timeframe so we can compare?
As a standalone query, fact_property_kpis_vs_last_year is spilling heavily, mostly due to ORDER BY 1 and FULL OUTER JOIN being the heaviest operations. Please let us know if you'd like help optimizing the query! The Duckling Overview Page is also a great place to start.