In my game on the Vertical Solar Map Techs go by way too fast after the recent changes, it was OK before! I play Snail and Monarch and have 15 well established cities at the end of the Ancient Era. There is space for much more than 100 cities on the Earth part of the map. Researching a tech takes only 1-2 turns, e.g. building a monastery alone takes about 3 turns, a hero takes 5 turns in my most productive city. If you reduce the tech times you should also reduce the time for constructing buildings and units. Or, as I already have asked for a long time ago, please give us an option to increase research times by a factor of 2 and keep everything else the same.