rise default tolerate-time-skewness

example.config.toml

 # Sometimes time can be skewed so we accept all messages within a
 # time range of this parameter.
 #
-# Default value is 3s
+# Default value is 15s
 tolerate-time-skewness = "5s"
 
 # Telegram has a concept of DC. You can think about DC as a number of a cluster

mtglib/init.go

 
 	// DefaultTolerateTimeSkewness is a default timeout for time skewness on a
 	// faketls timeout verification.
-	DefaultTolerateTimeSkewness = 3 * time.Second
+	DefaultTolerateTimeSkewness = 15 * time.Second
 
 	// DefaultPreferIP is a default value for Telegram IP connectivity preference.
 	DefaultPreferIP = "prefer-ipv6"