I see what you are saying, so i will list all the average performances while playing the main games i play.
Temperatures are not a problem because my case is quite big and it has a lot of airflow, the highest i've seen the cpu get to was 70C while running a benchmark and the gpu 60C max.
Battlefield 1:
Every setting at medium (1080p) + V-sync 100% resolution scale
Game runs at 60fps with tiny lag spikes here and there, it drops under 60 when there are multiple smoke bombs/explosions on screen, setting the post processing detail to anything above medium makes the game run at 20-30fps because anything above medium adds reflections and lots of details that ( i think) the gpu cant handle, but generally the gameplay is enjoyable.
Even thought i hate input lag and v-sync, battlefield 1 without vsync (60Hz monitor) has a horrible screen tearing, so i sacrifice a couple milliseconds to make my screen not look like absolute dog crap.
CPU sits at 70-90%
GPU around 90-100%
DOOM: All settings to medium with ambient occlusion disabled 1080p60hz
Game struggles to stay above 50fps, i reach 60fps in areas without a ton of stuff to render.
Explosions and effects drop the framerate by 5-10, but the game is still enjoyable since it's not a competitive shooter that requires lightning fast reactions.
No lag spikes whatsoever, but the framerate is very unstable, switching between Vulkan and OpenGL doesn't really make a difference.
CPU: 60%min 85%max
GPU: 90-100% most of the time, V-ram fills up to 100% in the first 10 minutes.
Rust: Every setting to the lowest + nvidia 3d settings set to get the best performance. 1080p60Hz
I lower every setting to the lowest in Rust because i want the most fps i can get to reduce input lag, since i play a lot of PvP servers where quick reactions are needed.
Cpu: 60-90%
v-ram: 90-100% even before any map loads completely.
ram: 6.2-6.8GB, it basically uses every Mb of ram that system isnt using.
Loads of lag spikes, loads of freezes, the game runs somewhat smooth but the lag spikes are really annoying, even if the game runs at 100-150fps (The more bases i load, the more the fps drops, until reaching 20-30fps after 30-60 minutes, requiring a full restart to free up ram).
Killing Floor 2: high-ultra settings 1080p60hz
stable 90-110fps
enabling nvidia PhysiX sends the framerate to s***t, but even the game specifies that a gtx 980 or higher is required to have blood and organs flop around realistically, not a problem honestly.
these are very lightweight but i'll include them just for the sake of statistics:
Team Fortress 2: Ultra settings + custom ultra quality settings, 1080p60Hz
150-300fps
not lag spikes
no issues
CS:GO. Highest settings, anisotropic filtering at 8x, multi core rendering enabled. 1080p60Hz
100-350fps
Csgo actually makes the cpu suffer more than a lot of other AAA games do, while im playing it the cpu fan is constantly running at full throttle and the usage is always above 85%
GPU: why even bother, it's CSGO.
These are rough benchmarks i made in the past couple hours and from what i could remember from previous benchmarks, but they are still quite accurate, since i like to keep performance graphs on screen if the game has them.