NextDNS speed measurement

Hi
 

I'm new around here. I'm a little confused by the speed I'm getting in ping.nextdns.io and the real speeds I'm getting in my browser and operating system.

here is a snippet of the results I get in ping.nextdns.io:

  zepto-ams     1 ms
  vultr-ams     1 ms  (ultralow2)
■ anexia-ams    1 ms  (ultralow1)
  vultr-lon     5 ms
  zepto-bru     6 ms
  fusa-bru      6 ms
  zepto-fra     6 ms
  anexia-lon    7 ms
  vultr-fra     7 ms  (anycast2)
  zepto-lon     8 ms
  anexia-lux   15 ms
  zepto-sto    27 ms  (anycast1)

I'm living in iran with a good connection speed, connected to ProtonVPN free Amsterdam vpn and I get these results in ping.nextdns.io.

but when I try to load a webpage it takes considerably more time to load, out of curiosity I tried to measure the DNS lookup time and fortunately the browser devtools provide that information. In firefox I get around 700 to 1 second in DNS resolution (in devrools > network tab > Timings > DNS Resolution)

So my question is, is this normal for a user with a vpn? and why does the ping.nextdns.io page show such low (misleading?) speeds? What are other preferred ways to measure performance of NextDNS.

Btw I really appreciate the generous free tier, although I'm not anywhere near the limit. But I want to support you whenever I can ️.