MacBook Pro 16 A2141 820-01700 cutting off, GPU panic error

[ielectron]

Hi everyone,
I get this MacBook with rebooting issues on the loading bar, it sometimes boots to the system, once boot up I've tried GPU testing software and it was crashing straight away after turning it on.
Checked the Log and getting :GPU-Panic: mux-regs 10 3 7f 1f 0 0
Does anyone faced this issue before, I've tried reflow GPU and the machine started working for a few days and fail again, I was able to do a GPU stress test, not sure now if this is a back issue from 2011 MacBook pro 15 with AMD GPU chip failure or rebelling will resolve the issue.
I also reball GMUX (U9850) chip but this didn't help.

 

[2informaticos]

If GPU revived few days after heat, then is the culprit for sure.
It has internal problem, like other AMD and Nvidia GPUs.

Reballing is not definitive solution.
Repetitive heat applied in the reballing process can make it last more time only.