(1) Suggest using "pastebin.com" for this kind of data. It may not look very pretty -- or readable at all -- on the viewer's end depending on their settings (see below for example).
(3) "Old database" might mean anyting. Provide the PG version it was created in and the one you are using along with the result of "\d+" in the current database.
(4) Classic causes of this are a botched index. Depending on the size you might just want to either drop and re-add the indexes or export and reload the table (e.g., \copy to ... + truncate + \copy from ...). The point there would be fully rebuilding the table and index structure.
But there is no index on startts
I’ll try that later on.
(6) Don't gamble on horses, play the stock market instead: It sounds fancier and you can loose much more money much more quickly... er... yeah.
I can guarantee you that you can loose on horses in any rate you prefer. :-)
What this looks like on my end. Feel free to try and make sense of it yourself.