Intel AC 3165 slow download, but fast upload

[TLőri]

Dear Intel,

I have a TPLINK Archer C5 V4 router configured to work on 5GHZ and I have a gigabit internet connection. On other devices on 5GHz I can measure pretty good download and upload speeds:

https://www.speedtest.net/my-result/a/4369648571 Speedtest Result

However with my computer the uploading works fast, but the download speed is always stuck around 30 megabit/s:

http://www.speedtest.net/result/7748068528 Speedtest Result

I have no clue why is it like this, could you provide any suggestion?

I have attached the output of the SSU tool. There is a detailed one with all the possible info and the other one is just for networking.

Thank you.

[TLőri · Accepted solution]

Problem solved. The solution is deleting SmartByte application installed automatically by DELL.

https://www.dell.com/support/article/hu/hu/hubsdt1/sln309274/smartbyte-application-may-slow-network-performance-and-audio-issues-with-inspiron-systems?lang=en SmartByte Application may Slow Network Performance and Audio Issues with Inspiron Systems | Dell Hungary