You might start by looking at where you put the plusSeconds(xx) and literally typing .plusMillis(zz) right afterwards. Itās really not that difficult to help yourself find out these things.
Also think about your values, the purpose here is to slightly offset each one, not delay them by exactly the same amount.
Out of interest, have you a fairly powerful machine to manage to create several timers in same millisecond?
I suspect this bug has bĆØen there all the time in OH2 but not many encounter it. Circumstance isnāt likely to start with, and then a plodding pi probably canāt manage to do the creation fast enough.
Iāve developed a āprofileā function which will add absolute position commands to blinds (i.e. Somfy and others) which do not natively support (vs. having to use scripts to do this). This wills support any number of Rollershutters so you wonāt have to worry about staggering your timers. To use:
Add the profile to your Rollershutter item which is linked to your installed rollershutter binding. Set your uptime/downtime parameters to the time it takes your blind to fully extend/close.