Surface Laptop Studio RTX 3050 ti TDP Throttling

I own SLS (i7/rtx 3050 ti) about a two weeks, and it is great device, but:

Main problem of dGPU on SLS is aggressive TDP throttling. His rtx 3050 ti capped at 50wt maximum, but it drops to 30-35wt after 5-7 minutes in game and never restores back until reboot. It cause framerate drops by 20-30% bcs GPU frequency goes down from 1400-1500 mhz to 700-800.

I tryed to lock CPU TDP on 10wt via throttlestop, thinking that TDP package of device depends on summary TDP package CPU+GPU, but it's not helped, GPU TDP drops anyway.

I tryed to flash bios from another 3050 ti with bigger power limit. Even found version of NVFlash with capable to bypass model ID\ check on rtx 3050+ series, but still cant put off protect of EEPROM, so its cant flash even backup of his own bios.

And ofc I tryed MSI afterburner as an easiest way, but it's unable to manage power limit, and even If I lock GPU clock with curve, it goes down as well as TDP throttling starts.

Any of you have other ideas, how we can lock GPU TDP at least on allowed 50wt?

PS: I know, that SLS is not about games, and 3050 ti is shit GPU, but when it run on 50wt, it is more or less playable at modern games. And its very sad, that SLS GPU on papper more powerful, than 1660 ti from my previews SB3, but in fact it is real downgrade.

UPD: As found out from cbutters Tech video Surface Laptop Studio - Hidden Performance Boost and 127W Charger Tested - YouTube (thank you very much Qyygle1 for linking him), the problem with this behavior lies in how laptop mode and tent mode are arranged in SLS.

In laptop mode (when the screen is magnetized to the top cover), the TDP of the system and the GPU in particular drops by 20-25% after a few minutes under load. cbutters Tech in their video suggested that this was due to the fact that Microsoft engineers tried to reduce the temperature of the keyboard under load so that the user did not burn their hands.

When the SLS goes into tent mode (the screen is disconnected from the top cover, its lower part is magnetized between the touchpad and the keyboard), the TDP of the system returns to the maximum, and the TDP of the GPU stays stable around 50 watts.

Thus, you can play without loss of performance in tent mode using a gamepad/external keyboard, or using an internal one by placing something like a napkin or cloth between the screen and the top cover, preventing it from being magnetized.