Brian_R710,
I don't understand your concern that NVidia or AMD are recommending specs. They are simply running the game on their own hardware then figuring out what you need to hit say 60FPS/1080p/High settings.
Their recommendations should be similar to anybody else who tests the game, though you can and should get more than one opinion if concerned.
The game appears reasonably WELL OPTIMIZED so far on PC. Yes, it needs some CPU improvements but overall it's looking great.
As for the GPU, a GTX1050Ti (has 4GB of VRAM) does a pretty good job of you properly tweak the settings.
TANYAC,
The temperature of a CPU or GPU alone doesn't tell you anything about how optimized a game is. I'm not saying it's well optimized or not, though I can tell you if the GPU is running HOT, and FPS is unlocked, then the code is actually using more of its processing capabilities than a game that is less hot, so in that sense it's actually MORE OPTIMIZED.
So if a GPU runs relatively cool in one game vs another there's either:
a) an FPS cap (i.e. VSYNC), or
b) CPU bottleneck, or
c) the game code isn't fully utilizing the GPU's resources