evtest fp1 touchscreen quickly

Event: time 1529181476.846046, -------------- SYN_REPORT ------------
Event: time 1529181494.267330, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1529181494.267353, type 3 (EV_ABS), code 48 (ABS_MT_TOUCH_MAJOR), value 1
Event: time 1529181494.267375, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 255
Event: time 1529181494.267397, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 736
Event: time 1529181494.267419, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 0
Event: time 1529181494.267436, ++++++++++++++ SYN_MT_REPORT ++++++++++++
Event: time 1529181494.267455, -------------- SYN_REPORT ------------
Event: time 1529181494.279481, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1529181494.279502, type 3 (EV_ABS), code 48 (ABS_MT_TOUCH_MAJOR), value 0
Event: time 1529181494.279527, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 255
Event: time 1529181494.279550, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 736
Event: time 1529181494.279571, ++++++++++++++ SYN_MT_REPORT ++++++++++++
Event: time 1529181494.279590, -------------- SYN_REPORT ------------