client request timeout via VPN

[Putiput]

my friend is about 600 km away, however i was able to reproduce the issue with my laptop from my parent's place, about 30 km. ping shows no packet loss:

Code:

ping -c 20 192.168.178.146                                          (base)
PING 192.168.178.146 (192.168.178.146) 56(84) bytes of data.
64 bytes from 192.168.178.146: icmp_seq=1 ttl=63 time=24.0 ms
64 bytes from 192.168.178.146: icmp_seq=2 ttl=63 time=18.1 ms
64 bytes from 192.168.178.146: icmp_seq=3 ttl=63 time=22.4 ms
64 bytes from 192.168.178.146: icmp_seq=4 ttl=63 time=20.5 ms
64 bytes from 192.168.178.146: icmp_seq=5 ttl=63 time=34.9 ms
64 bytes from 192.168.178.146: icmp_seq=6 ttl=63 time=20.4 ms
64 bytes from 192.168.178.146: icmp_seq=7 ttl=63 time=35.4 ms
64 bytes from 192.168.178.146: icmp_seq=8 ttl=63 time=20.5 ms
64 bytes from 192.168.178.146: icmp_seq=9 ttl=63 time=77.9 ms
64 bytes from 192.168.178.146: icmp_seq=10 ttl=63 time=22.2 ms
64 bytes from 192.168.178.146: icmp_seq=11 ttl=63 time=27.1 ms
64 bytes from 192.168.178.146: icmp_seq=12 ttl=63 time=17.1 ms
64 bytes from 192.168.178.146: icmp_seq=13 ttl=63 time=22.7 ms
64 bytes from 192.168.178.146: icmp_seq=14 ttl=63 time=16.8 ms
64 bytes from 192.168.178.146: icmp_seq=15 ttl=63 time=21.6 ms
64 bytes from 192.168.178.146: icmp_seq=16 ttl=63 time=20.7 ms
64 bytes from 192.168.178.146: icmp_seq=17 ttl=63 time=18.5 ms
64 bytes from 192.168.178.146: icmp_seq=18 ttl=63 time=20.6 ms
64 bytes from 192.168.178.146: icmp_seq=19 ttl=63 time=20.5 ms
64 bytes from 192.168.178.146: icmp_seq=20 ttl=63 time=20.5 ms

--- 192.168.178.146 ping statistics ---
20 packets transmitted, 20 received, 0% packet loss, time 19092ms
rtt min/avg/max/mdev = 16.846/25.125/77.874/13.034 ms

this is the output of traceroute:

Code:

traceroute to 192.168.178.146 (192.168.178.146), 30 hops max, 60 byte packets
1  * * *
2  192.168.178.146 (192.168.178.146)  19.824 ms  19.763 ms  19.759 ms