several issues after updating to Cross 1.5.0

hey guys, i have some issues after updating to Cross 1.5.0. and a pretty frustrating experience in the club last night...
im using a mac 4gb ram, after the update everything worked fine so far but after an hour of playin in the club, i noticed sync issues on payer b that got worse and worse, then i could watch the time code quality go lower and lower down to like 40%...all the connections and settings was propper, calibration before i started spinning was fine 100%...so i restarted the mac calibrated again (wich was pretty embarrasing in a packed club)...
calibration 100% again, but still sync issues, then the software added another thing, it started the track just somewhere in the middle i always had to actually get the needle of the record slide manually back via trackpad or sometimes i even had to upload the track again into the player...this lasted for like another 30 minutes until player a pretty much stopped workin, i couldnt do anything with the vinyl anymore...so i had to close my area down... i recheck all connections everything was absolutely fine...there was no software running in the background...i never had any issues before i updated Cross...hope yall guys can help me coz i have another set next weekend and need this to work...thanks in advance
im using a mac 4gb ram, after the update everything worked fine so far but after an hour of playin in the club, i noticed sync issues on payer b that got worse and worse, then i could watch the time code quality go lower and lower down to like 40%...all the connections and settings was propper, calibration before i started spinning was fine 100%...so i restarted the mac calibrated again (wich was pretty embarrasing in a packed club)...
calibration 100% again, but still sync issues, then the software added another thing, it started the track just somewhere in the middle i always had to actually get the needle of the record slide manually back via trackpad or sometimes i even had to upload the track again into the player...this lasted for like another 30 minutes until player a pretty much stopped workin, i couldnt do anything with the vinyl anymore...so i had to close my area down... i recheck all connections everything was absolutely fine...there was no software running in the background...i never had any issues before i updated Cross...hope yall guys can help me coz i have another set next weekend and need this to work...thanks in advance