Colin McRae Rally 3 (2002) | 4K | RTX 3090 | 5950X

Without recording add 10-20% of performance when gpu is at 95-100% usage.

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For recording i used OBS.
OBS settings:
Video TAB
Downscale filter: Lanczos (sharpening scaling, 36 samples)
4k resolution at 60FPS

Output TAB
Encoder NVIDIA NVENC H.264(new)
recording format - mp4
Rate control - CQP
CQ level 23
Keyframe interval - 2
preset - quality
profile - high
Look ahead - UNTICKED
Psycho visual tuning - TICKED
GPU - 0
MAX B-frames - 2

PC info:

cpu: AMD Ryzen™ 9 5950X;
gpu:GeForce RTX™ 3090 GAMING OC;
ram: G Skill TridentZ 64gb DDR4 3200 MHz cl14(4 sticks, dual channel);
mobo: ROG Crosshair VIII Hero X570 (WI-FI);
soundcard: Creative Sound BlasterX Ae-5 ;
cpu cooler: NH-D15 chromax.black;
pc case: Corsair 780T;
psu: Corsair HX1200 Platinum 1200W;

All 5950x settings were set on AUTO.

All 5950X settings were set on AUTO (in other words completely stock), amd virtualization feature has been enabled in the bios, nvidia resizeable BAR is enabled.
My motherboard's AUTO enables PBO by default.

"Process VRAM usage" - shows how much vram current running process (in this case this game) requires.

"Total allocated VRAM" - shows how much of VRAM is allocated from all programs in windows, windows itself, if opened - web browsers, spotify, discord, etc. Also allocation increases from multiple monitors as well, so the more monitors and with higher resolution are connected the higher allocation will be.
(This value is the same as in windows task manager, under GPU tab "Dedicated GPU memory usage")

Regarding the whole VRAM usage debate, none of these two values shows true game VRAM requirements and when it will start to starve of VRAM deficiency. And there are no ways to truly know it unless you test with less VRAM, but usually its impossible to test with same GPU as there are no ways to artificially limit VRAM usage. These values are more suited as guidelines rather than definitive proof, but usually performance starts to drop, when game has saturated 100% of "Total allocated VRAM" and it will have issues when "Process VRAM usage" will be at 100% of total GPU VRAM buffer.

The monitoring program used in the top left corner is MSI Afterburner On Screen Display + Rivatuner Statistic Server.