Inspiron G3 15-3579, high GPU temperatures

My specs are GeForce GTX 1060 Max-Q, i7-8750H, 16GB ram

I bought this laptop about 4 months ago. I came across an article of how undervolting can improve overall temperatures and performance so I've decided to try it. When I was testing stock vs undervolted temps of CPU, I came across a discovery that my GPU was running above 85°C which seems quite high. So I tested my laptop with cooling pad but the temperatures were still above 80°C. The last thing I tried was selecting the cool option in Dell Power Manager and the temperature was still high sitting at 79°C. I compared my temperatures with the temperatures in Dell G3 reviews on YouTube and saw that their GeForce GTX 1060 Max-Q was running around 65°C which is considerably lower than in my case. I also tried updating BIOS which did not seem to help and all my drivers are updated to the latest version. Overall IDLE temperatures seem to be okay and CPU temps under load are also normal.

I did consider replacing the thermal paste, but I don't want to ruin my warranty. So at this point I am not really sure what else can I do. If anybody had similar problems, I would be more than happy to be informed on how they solved them.