NextDNS choosing the slowest server

Currently using the IPv4 DNS server on my router.

This is the diag results

Resolvers:  192.168.108.1
Testing IPv6 connectivity
  available: true
Fetching https://test.nextdns.io
  status: ok
  client: xx.xxx.xxx.xx
  protocol: UDP
  dest IP: 45.90.30.103
  server: vultr-syd-1
Fetching PoP name for ultra low latency primary IPv4 (ipv4.dns1.nextdns.io)
  anexia-yto: 36.334ms
Fetching PoP name for ultra low latency secondary IPv4 (ipv4.dns2.nextdns.io)
  vultr-yto: 36.466ms
Fetching PoP name for anycast primary IPv4 (45.90.28.0)
  vultr-syd: 258.268ms
Fetching PoP name for anycast secondary IPv4 (45.90.30.0)
  vultr-syd: 222.766ms
Fetching PoP name for ultra low latency primary IPv6 (ipv6.dns1.nextdns.io)
  anexia-yto: 25.196ms
Fetching PoP name for ultra low latency secondary IPv6 (ipv6.dns2.nextdns.io)
  vultr-yto: 19.233ms
Fetching PoP name for anycast primary IPv6 (2a07:a8c0::)
  vultr-yto: 25.055ms
Fetching PoP name for anycast secondary IPv6 (2a07:a8c1::)
  anexia-yto: 25.359ms
Pinging PoPs
  vultr-yto (IPv6): 14.888ms
  teraswitch-pit: 18.733ms
  ovh-ymq: 23.74ms
  anexia-yto: 25.923ms
  zepto-ymq (IPv6): 23.598ms
  zepto-iad: 38.93ms
  vultr-yto: 31.153ms
  vultr-ewr (IPv6): 31.105ms
  vultr-ewr: 31.298ms
  incx-dtw: 23ms
  teraswitch-pit (IPv6): 38.96ms
  anexia-yto (IPv6): 23.369ms
  zepto-iad (IPv6): 31.384ms
  hetzner-iad (IPv6): 31.395ms
  hetzner-iad: 31.34ms
  zepto-ymq: 31.243ms
  router-pit: 75.887ms
Traceroute for ultra low latency primary IPv4 (188.172.221.9)
    1  192.168.108.1    2ms   1ms   1ms
    2   99.240.198.1   13ms  15ms  18ms
    3  69.63.254.253   17ms  14ms  18ms
    4 72.139.136.102   15ms  16ms  17ms
    5 209.148.235.210   42ms  20ms  16ms
    6     64.86.33.5   29ms  34ms  55ms
    7  129.250.9.170   31ms  33ms  37ms
    8 168.143.191.71   34ms  30ms  31ms
    9  188.172.221.9   26ms  31ms  31ms
Traceroute for ultra low latency secondary IPv4 (155.138.130.135)
    1  192.168.108.1    2ms   2ms   1ms
    2   99.240.198.1   31ms  16ms  15ms
    3  69.63.254.253   24ms   8ms  16ms
    4 72.139.136.110   14ms  11ms  17ms
    5 209.148.235.210   13ms  15ms  21ms
    6     64.86.33.5   40ms  35ms  35ms
    7  173.205.54.65   48ms  31ms  31ms
    8 141.136.105.170   32ms  36ms  32ms
    9  98.124.179.74   33ms  37ms  33ms