Did u implement the best practices in designing the extracts? if not check this
Please also check if there are network latency related issues.
Don't think best practices for extract creation is the answer here. I am facing the same issues with respect to Snowflake. I am trying to create an extract from one table that has 4M rows. I cancelled it after it extracted 2M rows in 45 mins. Looking for an answer...
Tableau does not depend on the schema of data warehouse schema.check this:
It all depends on the best practices employed to design workbooks,extracts and the filters applied.
I suggest you to do a performance recording and check where the bottlenecks are.
Thanks but we figured the issue. It was network latency.