Civ6 - big map - long turns - new computer

[MasteroEl]

Hello Girls and Guys
i just bought a new computer, with I7-7000, gtx1060, 16GB ram, and then launched civ6, 16player map, 20 city states and after turn 35, game becomes slower and every 5 turns it takes around 2 min in between turns. this is not normal.
anyone with any suggestions what to do, to prevent this?

 

[assuredgrp]

My turn time is worse. Using a huge map, and AI is taking 10 minutes after about 100 turns each and every turn. This never happened before the summer update auto loaded by Steam, and I can find nowhere how to unload this supposed update that ruined Civ 6. Please advise how to unload the summer patch, or plead with Firaxis to fix these terrible occurrence.