1| It'd help if we knew of your laptop's make and model. Some laptops that are mean't for gaming have a beefy cooling solution. I said
mean't for gaming because there is a clear difference between a laptop that is built for gaming and a laptop that is built for workstation like duties.
2| Might I ask how old your unit is? Often running stress laden duties on a laptop can result in the cooler, in the confined profile, to accumulate dust and debris and eventually reduced the cooling efficiency.
3|
i5-6200U's max T junction is 100 Deg C while
you have thermal throttling for the Nvidia GPU.
4| You can also try and raise the laptop's area where the cooler air is drawn in to help with air intake.