Quadro RTX 3000 TDP issue

[cride20]

Hello fellow readers!
I'm relatively new to here but I'm so clueless about a gpu related issue... after trying to fix it for the past 5-6hours I started to gave up, and this forum looked the most promising to ask such a question

Backstory:
Recently I bought a Lenovo P53 with a Quadro RTX 3000 and an i7-9850H for a cheap price, but my issue is that the gpu is underperforming, like way below expectations. (using 15-20w instead of its 80w tdp)

Issue:
GPUs current TDP is around 15-20w paired with 100% usage in creative apps, games, benchmarks everything. The clock speeds seems to be locked to 300MHz for some odd reason.
The frustrating thing is somehow I fixed it for 10minutes and it locked back to 30w again.. because of that I saw that it can eat 80w easily and perform 500% faster I started to find methods to fix this "issue".
Thermals are fine (<65C) power limiting shouldn't be an issue since it did work before with 80w easily, and the power cable is 230w that could easily power the whole system.
(I'm also attaching a screenshots how does a locked performance look like, and how did that unlocked performance looked like before)

GPU-Z Performance cap reasons:
Pwr = (performance is limited by total power limit)
Thrm = (performance is limited by temperature limit)
After some registry tweaks instead of idle: (still drops down to 300mHz as soon as I open any GPU intensive application)
VRel =(performance is limited by voltage reliability)
Vop = (performance is limited by max operating voltage)

A method that "works":
One method I found is that if I change the NVIDIA control panels "Adjust image settings with preview" tab to "Use my preference emphasising: Performance" then settings the max power inside NVIDIA APP to maximum performance, then reinstalling NVIDIA driver via the NVIDIA app beta, it works until I put the notebook into sleep or hibernate, closing the lid, restarting etc. you got the point.
I don't want to reinstall the driver everytime I want to do some GPU heavy workload.

Other methods I tried:
Regedit:
"DisableDynamicPstate" to 0 (disable dynamically changing performance states to maintain max performance p0 state)
"EnableDriverControlledPMM" to 0 (driver controlled power management off)

Other:
Tried installing game ready drivers maybe it'll fix some issues, it didn't
Hidden power plan settings I found... (no idle state on the cpu) didn't fix it

Sorry if some sentences are hard to understand, I'm not that good at the language :/
Thanks any help and time that you spent reading it

 

[StViolenceDay]

Nvidia has a very complex organization of poer limits. While GPU-Z is great - some additinal power-usage related info may be seen in hwinfo64 for some GPUs.

Here is somebodys screenshot for desktop GPU - with my marks on expanded/especially interesting. The values are irrelevant, its just a sample what info can be interesting.
make a pair of similar screenshots with such info - one when the problem exists and second while the problem do not present (after your complex but temporal workaround).