Issue with LFO rate and sync

Ok so I have my pattern down, I have the LFO rate and depth automated to the way I want it to the cutoff. Sometimes it cycles thru one 4 bar loop in perfect sync and on beat and then sometimes it floats off and goes off beat. Why would this happen? I have the same envelope duplicated every 4 bars for 16 bars in succession

The lfo has its own cycle that might not be synced with you trackā€¦ If you want to automate filter its best to do it directky and automate the filter cutoff.