Bro, check yourself or read many news and test in internet.
But dx12 means Win10 and Win10=no mods or infinite issues, security problems and more if you like to patch games,
for sure if you are not a very experted in MS OS settings managements.
If you like to play games in default mode, Win10 (dx12) it's very good.
On addon in dx12 mode if the pc isn't properly optimized you can see lags as usual or micro stuttering.
Also depend on your hardware, for example there are many combo with best performance in dx11 and reduced in dx12.
...just make your choice.
Bro the patched inifs isn't working for you (Win10???), try to edit the ini like this:
FIFA_DEMO = 1
HALF_LENGTH=10
AI_SETTING_HALFLENGTH=10
AI_SETTING_ENABLE_HANDBALL=1
GAME_SPEED=0
or put the half length string in the ini upward. Try, try try, you are a modder?
The demo is stange and hard to mod but amazing to test your skills,
easy to browse because small and always useful for the modding studio.
A little preview for you and everyone interested.
Updated multipliers this year (more customizable and in live game you can change settings, for any cam)
Test in default camera
Zoom - numeric 5 = 2 (not 8 like the pic)
Tool is a standalone exe and CE isn't required to run it, and will be released only for the full game,
because is required a lot of time to mod every camera and for the demo it's time wasted,
in a few days the complete game comes out and then nobody will use anymore demo mods.
EDIT
I want to give a gift to all of you:
This is the CAM Tweaker Demo Version ahahahh, only the default cam will patch,
and you can try out in the 19 demo because it will be another game again.
When you run, wait loading after auto attach super fast process.
I do this:
Run demo, skip all tabs, at Kevin De Bruyne tab, before you click, run cam tw, follow info,
normalize camera via sliders (you must select custom as usual).
ENJOY!
Download DEFAULT CAM TWEAKER from here.
Just for fun:
...this magic and beautiful ball.
...this magic and beautiful game.
EDIT:
Download BROADCAST CAM TWEAKER from here.