When I use NewFailoverClusterClient and configure the setting to RouteByLatency=true, the latency increases significantly

[fang2329]

go-redis version:8.11.5
redis-sever：3.2.8

case1:
c :=redis.NewFailoverClusterClient(&redis.FailoverOptions{
MasterName: xxxxx,
SentinelAddrs: xxxxx,
DialTimeout: 500 * time.Millisecond,
ReadTimeout: 500 * time.Millisecond,
WriteTimeout: 500 * time.Millisecond,
IdleTimeout: 120 * time.Second,
RouteByLatency: true,
}
c.Get() cost:169ms

case2:
c :=redis.NewFailoverClient(&redis.FailoverOptions{
MasterName: xxxxx,
SentinelAddrs: xxxxx,
DialTimeout: 500 * time.Millisecond,
ReadTimeout: 500 * time.Millisecond,
WriteTimeout: 500 * time.Millisecond,
IdleTimeout: 120 * time.Second,
}
c.Get() cost:21ms