Are you actually keeping up with the AI in science and score, though? Or just beelining/slingshotting to victory conditions?
I'm finding my bpt is 1/2 to 2/3 what it was pre-patch (on either ITR or ETR focus) and my score is usually bottom 3 vs. easy first rank pre-patch. I'm aware score doesn't matter but it does seem the AI does a better job of econ now. Have only played a handful of post-patch games tho -- perhaps my strategy was too reliant on TRs and I just haven't adapted enough.
Understanding of the trade routes helps... the nerf did not slow down my victory times. Specialization of a city helps internal trade routes. Example, start with your capital, set to production focus, get your second city settled in a good food spot, set to food focus... send trade route... get hammers in capital, get food in second city... by turn 50, second city has more population than your capital... Approve a station with food, and send a trade route from capital, grows the capital, but does not affect your other trade routes yields.
I pay NO attention to score, or where I rank with the AI.
Send a trade route to your closet neighbor, for the diplomacy bonus, try and get some science from it. If it is ARC, she will backstab you every time.
After I get done researching biowell tech, and academies, then I concentrate on leaf techs for affinity points to get to my choice of winning conditions. And those leaf techs, in the second ring of the web are researched every 5 to 8 turns.
I will accept a favor trade for 3 floatstone, or zenomass, titanium, geothermal, firxite... since I am not using them during the early game. Depending on my needs, I may renew the favor trade, but have notice to ill effect for not renewing the deal. I also accept corporation agreements. Just keep track of them, need to know who likes who. I will also sell open borders for 2 energy to a faction across the map, during the early game. I never give open borders to my neighbor... allows them to scout out attack routes.
Can you elaborate on your strategy?
Population is king, as everything else in the game is keyed to your population.
I do drop as low as -20 health in the early game as I expand to 4-6 cities.. and one of those will be a forward settle on the AI, near a choke point... Early scouting is needed.. so First thing I build is another explorer, and I circle explore my territory first, to identify where my cities will be, where the natural barriers to attack are, and where I can use a choke point...
Need gunners to defend... no offensive wars early.. a marine to be a meat shield is also helpful, and we all get one of those. A rover to steal workers from the civ that attacks you. Again depends on terrain, and your scouting...
I will forward settle, and then back fill to my capitol, so I get the diplomacy bonus of keeping my promise not to settle in their lands. Do Not settle in a flat expanse... that city will die... when forward settling... move it to a hill, preferably with a canyon or mountain on one side.
I dig up ruins, in their territory and then promise not to do it again...easy promise to keep.
ARC will backstab you.
There are things I don't understand about CiV diplomacy. It isn't as transparent as the other mechanics. I think many people, including me, would appreciate a post explaining what goes on behind the scenes if it isn't too much work for you.
Diplomacy, it is not a straight forward mechanic... ARC is a back stabber, regardless of what you do, she will want your lands. You can slow down the attack by NOT settling near her, but she will expand towards you anyway. So I forward settle her, then promise not to do it again... holds her off for a time... send a trade route, may slow down the attack.... just have 2 or 3 gunners, and a marine ready to defend by turn 60. Building the rocket battery in the city helps greatly.
KP likes an early coop... I accept, and if she is a neighbor I will send a trade route. She is easy to keep happy, with a favor trade, or selling one resource for 2 energy.
Brazil, always thinks his military is better than yours, as a neighbor, nothing will appease him forever... much like ARC.
Biggest thing I pay attention to is their hostility towards me, and when I see the build up of troops on my border, I prepare... Might be able to bribe them to attack someone else, but at this point it is usually too late... Those favors are helpful to bribe them to attack someone else along with a few resources. If two AI's have conflicting borders, it is easy to bribe one to attack the other. Keeping them at war with each other, keeps their attention off you.
I do not play a strong diplomacy game...