Soo, yesterday night did some research, a friend of mine suggested running TronScript ( which removes all windows bloatware etc ). Successfully launched and waited for about 2 hours to complete. Afterwards downloaded intel XTU did undervolt of -0.140 mV, and changed turbo boost power max to 75.50 W ( Before 60 W ). next downloaded MSI afterburner, where i boosted core clock for about 120 MHz, and memory clock for about 80 MHz, Now in idle my Dell G7590 ( RTX 2070 MQ, i7-9750H ) is running at 40*C degrees, stress tests max temp now is around 86*C Degrees, ( Before 96-100 ) ( even with just an undervolt ) all the time before it was Thermal throttling and power limit throttling. For now i have eliminated both of them, but im thinking about repasting ASAP this laptop, to achieve better temps, because even with a laptop cooler pad its real pain in the ... 🙂 Before that had same problem as js0uth, it just randomly hits max temp and restarts laptop, now for already a day everything feels fine and smooth.
I will keep experimenting with the settings in XTU and MSI to get even better results.