Why is my ping on Xbox one test high but very good in the test?

Why is my latency on my Xbox one S at 200ms, but when I do a test with Speedtest or Speedcheck it is only between 20-40ms in 10 tests. I don't know if it matters but I live in Thailand…

I would be very happy to receive an answer.

I also have 30-40Mbits in the download and 10Mbits in the upload.

If I download games at the same time or stop downloading, nothing changes.