I encounter the same issues. I can't play the game in campaign or multiplayer no matter what are the graphical sets, resolution or resolution scale.
Campaign map runs "smoothly" most of the time except a few freeze/fps drop there and there but as soon as I go in a battle or a village/town it is absolutely unplayable. I've tried everything I had in mind without any good result, might work for you :
- Lowering graphics, resolution scale, resolution itself
- Disabled enhanced noises (Windows control panel -> sound -> headset -> enhancements -> disable enhanced noises)
- Cleaning my RAM cache and processes
- Put the value of the process to High
- Launched steam without webhelpservice.exe (integrated steam browser)
However custom battles seem to work fine (just micro-freezes at the beginning like it is loading the troops) up to 200vs200.
Here is my rig, we share the same GPU :
- W10
- i5 4460 Quad Core 3,2 GHz
- GTX 1060 6GB
- 8GB of RAM
I think this might be memory leaks issues combined with GPU issues, a lot of people with GTX 10... series have issues.