Good day, i had a problem with my phone m51, whenever i update games or download large files it always throttle down to 15-20mbps. i have a 150+mbps fiber internet and i get that speed with my 5ghz wifi. is it a bug or maybe a defect. thanks for the feedback. 
Video of the Issue
thank for the reply
For comparison I have an a50s and it never slowed down like my m51 while doing the same thing, it’s like when I’m patching a game or downloading, the DL suddenly gets “bandwidth limited” to 15mbps for a few minutes then reverts back to normal or when I restart it. this never happened on my a50s or any other samsung phone i have.
I’m also close to my router and it’s a new phone release just this Sept. 2020. So I was torn whether it’s a bug or a hardware issue. I also sent Samsung the error log but unfortunately it’s been a week with no answers from them.
