Are you using your walking foot or FMQing? When using my walking foot I do stop to reposition my quilt frequently to prevent drag. When FMQ I use my needle down function and stop to reposition my hand and the quilt frequently. The quilt must move freely for whatever direction you want to quilt in. You can go any direction you want in FMQing but quilting behind the needle is harder because you can’t see where you are going.