Pool Members Flapping Continuously

Hi Everyone, I have a pool that is continuously failing and passing health checks. I'm using http monitor

ltm pool t1b {
    members {
        10.1.14.135:any {
            address 10.1.14.135
            session monitor-enabled
            state down
        }
        10.1.14.77:any {
            address 10.1.14.77
            session monitor-enabled
            state down
        }
        10.1.14.142:any {
            address 10.1.14.142
            session monitor-enabled
            state up
        }
        10.1.14.143:any {
            address 10.1.14.143
            session monitor-enabled
            state down
        }
        10.1.14.144:any {
            address 10.1.14.144
            session monitor-enabled
            state up
        }
        10.1.14.145:any {
            address 10.1.14.145
            session monitor-enabled
            state up
        }
    }
    monitor http_80
}

  ltm monitor http http_80 {
            defaults-from http
            destination *.http
            interval 5
            send "GET /\\r\\n"
            time-until-up 0
            timeout 16
        }

Here's a tcpdump i took between my monitor local self-ip 10.1.14.22 and the server IPs tcpdump file - google drive

Appreciate your help!