Update....
Remove <kuid2:61392:4053:22> Named Objects Library (TANE SP4 and later) which is a dependency of the TRC trigger and using the last builtin version 18 stops the pauses, leastwise not seen any in 40 minutes of running the session, there does appear to be problems with some crossings where the traffic gets stuck but gates are working.
Other versions? 19 doesn't seem to exist, 21 makes things worse in that gates remain shut to trains as do 20 and 21 and pauses are back.
Still investigating.
Remove <kuid2:61392:4053:22> Named Objects Library (TANE SP4 and later) which is a dependency of the TRC trigger and using the last builtin version 18 stops the pauses, leastwise not seen any in 40 minutes of running the session, there does appear to be problems with some crossings where the traffic gets stuck but gates are working.
Other versions? 19 doesn't seem to exist, 21 makes things worse in that gates remain shut to trains as do 20 and 21 and pauses are back.
Still investigating.