Yep. Or it's faster to save your stuff, reinstall the OS and the mobo drivers, create a restore point then install the other drivers, create a second restore point then install your programs one by one and check with that program after each installation. If it's OK, again do a restore point and so on. Eventually you will find the culprit (if it's a conflict), might be the antivirus or anything else. When your latency is off go back to the previous restore point and use some other application instead of that one.
Run this firsthttp://www.seagate.com/www/en-us/support/downloads/seatools