Question CPU Jumps from 50 C to 100C really fast

[Jorgergo]

Is it normal for my CPU to jump from average temperature of 50 Degrees to 100 Degreed in literally 1 second? I was trying to perform a Stress Test, My CPU was at 50-52 Degrees, but the second I click on Start Testing, the temperature goes up to 100 Degrees and the CPU thermal throttles. Any clue on why this is happening?

I have an i9-8950HK on my laptop

 

[Jorgergo]

Evidence

https://imgur.com/a/H3YJUQu

View: https://imgur.com/gallery/H3YJUQu

 

[CountMike]

Evidence

https://imgur.com/a/H3YJUQu

View: https://imgur.com/gallery/H3YJUQu

Speed at which it happens is quite normal as cores can heat up faster than cooler can soak up, should drop just as fast. As for max temp, it may need some clean up and/or paste or heat pad change.