Peter schrieb am 23.03.2018 um 11:03:
> My queries get up to 10 times faster when I disable from_collapse
> (setting from_collapse_limit=1).
> After this finding, The pramatic solution is easy: it needs to be
> switched off.

You should post some example queries together with the slow and fast plans. 
Ideally generated using "explain(analyze, buffers)" instead of a simple 
"explain" to see details on the execution 


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