Hi, just to confirm, you have Delay Compensation “On” in Reason? http://docs.propellerheads.se/reason10/wwhelp/wwhimpl/common/html/wwhelp.htm#href=PDC.18.2.html&single=true
If that is turned on correctly, could you provide us with a bit more information so we can try and reproduce?
– What OS are you using?
– Does the issue occur in a simple test session, e.g. two tracks where one has no plugins and one has SplitEQ?