Wrong ping times on OSX 3.5.2

On my Mac book pro, running 10.13.4

If I look at the pings from your program, some are correct, other are wrong... If I ping from terminal, I get a different ping time... (in my case, any ping over 20ms is wrong)

One example....
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Generated by Angry IP Scanner 3.5.2
http://angryip.org

Scanned 192.168.1.0 - 192.168.1.255
May 21, 2018 3:59:01 PM

IP Ping Hostname Ports MAC Address MAC Vendor
192.168.1.1 106 ms PhoneCloset.local [n/s] 88:1F:A1:28:B4:7C Apple
192.168.1.20 2 ms NPI8371CC.local [n/s] 00:11:85:83:71:CC Hewlett Packard
192.168.1.32 2 ms MediaServer.local [n/s] 00:11:32:39:37:8D Synology
192.168.1.60 2 ms [n/a] [n/s] 00:18:DD:32:72:15 Silicondust Engineering
192.168.1.61 2 ms [n/a] [n/s] 00:18:DD:06:26:14 Silicondust Engineering
192.168.1.50 256 ms FamilyRoom.local [n/s] F0:99:BF:03:F2:1C Apple
192.168.1.102 1055 ms Android.local [n/s] 00:04:4B:72:12:AD NVIDIA
192.168.1.70 1028 ms HAP-S1-D8D43C9C6546.local[n/s] D8:D4:3C:9C:65:46 Sony
192.168.1.100 1180 ms [n/a] [n/s] 2C:3A:E8:26:05:29 Espressif
192.168.1.106 1036 ms [n/a] [n/s] 00:FC:8B:85:F8:4E Amazon
192.168.1.109 1108 ms [n/a] [n/s] 34:D2:70:47:1B:D6 Amazon

PING 192.168.1.1 (192.168.1.1): 56 data bytes
64 bytes from 192.168.1.1: icmp_seq=0 ttl=255 time=5.007 ms
64 bytes from 192.168.1.1: icmp_seq=1 ttl=255 time=4.713 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=255 time=5.115 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=255 time=5.148 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=255 time=4.821 ms

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