Finally got the PC build running smooth.
My secret?
Vsync off and turning on the dynamic mode, LOL
I refused to use dynamic and tried to custom set everything on High to Ultra in an attempt to figure it out myself. I've tweeked for weeks now and no dice.
I literally ignored the dynamic mode. The second I turn off dynamic mode and turn on Vsync I get hitching and horrible input delay. It's running fine now it seems, why did I wait so long?! Funny thing is...with Vsync off, I don't see any screen tearing (which I hate).
Also, bit of a rant here. Forza Horizon 3 is the best looking racing game DURING GAMEPLAY across the board, period. I've just put hours and hours into Driveclub over the last few weeks and I'm going to complain about you blind people that said it was some kind of hands down best looking racer there is, LOL. Even people who have played both, like myself I've seen say DC looks better. DC looks HORRID during gameplay. The game literally has this one time of day at certain points on some tracks that looks amazing, or exact weather situations where it looks darn good, but god almighty everything more than 40 yards from the cars look horrid. The LOD is eye stabbing bad and filled with jaggies, yikes. I've even laughed at DC's scenery and LOD a few times over the last couple weeks. I swear some people need glasses. 80% of the races I've ran in DC are eye sores, with a few moments of beauty. I shouldn't have to TRY to make the game look good for shots. Also, when you're playing a racing game you're looking at the horizon/apex of the track...and the game looks so bad there due to LOD and low-res textures.
Anyway, nothing touches 4K FH3 across the board during gameplay. LOD/textures/skies, etc. The game looks good-incredible in nearly every race/trek.
Having now ranted...I love FH3's gameplay and I'm really enjoying DC's gameplay too. Sorry to go off there, but it's bugged the heck out of me after going in expecting to be blown away by DC. My fellow racing fans (graphic whores) hyped me up and let me down
. I'd love a PGR style racer from Playground games now that I have put time into DC.
Now that I have the PC build running fine (I also have it on X1), I'll look at picking up that beautiful snowy expansion.