Hello again!I believe I have found the source of the problem. Some programs force "High performance" power plan on the computer. Studying hidden parameters, I have found that one of them sets minimum processor state on 100%, meaning the system can not limit it if it gets too hot. This results in overheating and computer switches off.A workaround to it is to just copy the parameters of standard power plan to high performance power plan. This would essentially make them the same, so the computer will operate normally even if it switches power plans. I have tried it several times and it seems to work pretty well. I personally used PowerSettingsExplorer, but this is a third-party software. Good luck!
I have recently encountered a problem I never encountered before. Essentially, my computer started to overheat and shutdown under load due to Intel Dynamic Tuning: SEN1_HOT = 368 K event. I am confident that it is neither CPU (Official Intel Extreme Tuning Utility showed me around 80 degrees under load), nor GPU (MSI afterburner gave me around 70 degrees).   I know that the most obvious solution would be to re-paste the components, especially since this model is known for having issues with temperatures. However, what stops me is that I have no idea what SEN1_HOT code means, first part specifically. I have found similar reports while googling and encountered NVME_HOT, WRLS_HOT and TCPU_HOT, which are self-explanatory. I am unsure I want to try and fix something which is not broken with repasting.    So far I have disabled Turbo Boost, which lowered the temperatures to abovementioned 80 degrees on CPU, however, it should be fine running at 100 as far as I know.   I believe I should also mention that this problem started to manifest when I started to use VR, and never before, even on higher CPU and GPU temps (90-100). Additionally, I think that SEN1 means "Sensor 1", but I still have no clue where it is located.   For information of Dell support, my computer is out of warranty.
Intel Dynamic Tuning overheat SEN1_HOT - DELL G5 15 5590