Meteor Punch, I did get a 1796 Sid 20 K win on Hof later, but I had to restart so many times and wait so long into the game that I didnt really have notes so did not do a full thread.
Sometimes, a game that looks good at end of middle ages crashes, as the AI suddenly wakes up, kicks you ass in tech and wonder building.
Anyway Smirk, I would like to help you a get some ideas, as I might try and beat my record sometimes in the next few months.
What settings are you using (map settings, AIs, start strategy etc.)
For Sid, I used Archipelago, least land arid and warm, most mountains.
The goal is to get worst terrain possible to stop the AI (worked pretty good actually)
If youre lucky they wont even be able to irrigate their starting island (no fresh water) and will be stuck at size 6.
Then I used mongols and zulus as AIS
And then my biggest change was using byzantines.
I would build colossus, then a few curraghs to go meet the AIs.
Then my settler, some warriors etc.
By that time the curraghs have met the AIs. I can build a temple, granary if needed etc usually can prebuild the oracle
all the while im research writing, philo etc...
I think forsaking a few early wonders (pyramids and oracle) is good if it allows you to dominate the AIs.
The main thing to remember is, whatever plan you have, you will need LUCK

(and therefore patience)