diff --git a/st.cmd b/st.cmd
index e8de542675f0389533ad8a3f394add2f5c3c2fe8..9ec681d7ad079a2244273d3cfc970f16a3137739 100644
--- a/st.cmd
+++ b/st.cmd
@@ -10,9 +10,10 @@ epicsEnvSet("F-SYSTEM" "$(F_SYSTEM)")
 iocshLoad("$(common_DIR)/e3-common.iocsh")
 
 # Load LLRF
-require llrfsystem, 2.8.4
+require llrfsystem, 2.8.5
 
 epicsEnvSet("RFENDPV", "$(LLRF_DIGRTM_PREFIX):$(LLRF_DIG_R_1):PosRFEnd")
+callbackSetQueueSize(10000)
 iocshLoad("$(llrfsystem_DIR)/ts2.iocsh", "P=$(LLRF_PREFIX)::, R=, PD=$(LLRF_DIGRTM_PREFIX):, RD=$(LLRF_DIG_R_1):, PD1=$(LLRF_DIGRTM_PREFIX):, RD1=$(LLRF_DIG_R_1):, PD2=$(LLRF_DIGRTM_PREFIX):, RD2=$(LLRF_DIG_R_2):, RR=$(LLRF_RFM_R_1):")
 
 dbl > PVs.list