Wiresock causes high ping in a game

[Justaway]

Hello! I’ve installed Wiresock and configured it like this:

[Interface]
PrivateKey = ##
Address = ##/32
DNS = ##

[Peer]
PublicKey = ##
AllowedIPs = 0.0.0.0/0, ::/0
Endpoint = ##
AllowedApps = taiga

Logs only show connections with allowed app, there are no traces of game traffic, but ping skyrockets nonetheless:

WireSock LightWeight WireGuard VPN Client is running as a regular process.
2022-04-10 15:49:58 WireSock Service has started.
2022-04-10 15:49:58 [MGR]: Using WireGuard server: ## : 51820
2022-04-10 15:49:58 [TUN]: Detected default interface {##}
2022-04-10 15:49:58 [TUN]: Using local IPv4 = ## for the {##}
2022-04-10 15:49:58 [TUN]: Using local IPv6 = ## for the {##}
2022-04-10 15:49:58 [TUN]: Sent handshake packet to the WireGuard server at ##:51820

2022-04-10 15:49:58 [MGR]: Tunnel has started
2022-04-10 15:49:58 Wireguard tunnel has been started.
2022-04-10 15:49:58 [TUN]: Handshake response received from ## : 27850
2022-04-10 15:50:23 [TUN]: Packet size is above MTU: ip_len = 1423 MTU = 1420 => Injecting ICMP unreachable
2022-04-10 15:50:23 [TUN]: keep_alive_thread: Sending Keepalive packet to WireGuard Server success

2022-04-10 15:50:23 [TUN]: keep_alive_thread: Sending Handshake packet to WireGuard Server success

2022-04-10 15:50:23 [TUN]: Handshake response received from ## : 27850
2022-04-10 15:50:24 [FILTER]: Taiga.exe : TCP : ##:13021 -> ##:443
2022-04-10 15:50:33 [FILTER]: Taiga.exe : TCP : ##:13267 -> ##:443
2022-04-10 15:50:34 [FILTER]: Taiga.exe : TCP : ##:13267 -> ##:443
2022-04-10 15:50:48 [TUN]: keep_alive_thread: Sending Keepalive packet to WireGuard Server success

Is it me doing something wrong, or game doing some shady stuff with all traffic?

[Vadim Smirnov]

Using a VPN may affect your ping, the details depend on the location of the VPN and the game server. Sometimes you can win, sometimes you can lose. Wiresock software itself has very low latency, unless you use verbose logging, don’t forget that I/O operations are always expensive.

[Justaway]

Yeah, but shouldn’t it ignore all apps outside of AllowedApps? As in the only one app using VPN is Taiga, in my case. In fact, all other apps (Firefox and Yandex Browser, qBittorrent, etc.) are working just fine, only when I’m launching this game (Genshin Impact), it clashes with Wiresock. It’s not only high ping, sometimes it causes all connections to stop working.

[Justaway]

I’ve continued to monitor ping with Wiresock enabled, and haven’t really seen any hickups for two days. I don’t know what caused it, but looks like problem fixed itself (for now)?

[Vadim Smirnov]

If you had problems with v1.2.4 and don’t have them with v.1.2.5, then it was probably the same bug reported here.

[Author]

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