Vibration under power
2014 SE 1.6t here with 110k. Recently my car has begun vibrating under power at highway speeds. As soon as I let of the accelerator the shaking stops. when it first started it felt similar to a wheel out of balance, but after rotation it continued, and now it has gotten progressively more violent. I have recently replaced the drivers side CV axle which did not solve it, passenger side CV axle seems fine. I took it to the shop for an oil change and to get the coolant level sensor installed and it seemed to be better for a week after being in the shop, but has since started occurring again. Also only seems to happen after driving for 10+ minutes. Has anyone else experienced this? Has anyone else experienced something similar? My next thought would be motor or trans mounts, as it sometimes feels rough when shifting between park, reverse, and gas. If not than I suspect an issue with the transaxle. Any help appreciated.