Hi staceym23,
Thanks for your post and apologies to hear you're having this issue on your 360 box.
newapollo has provided a good setting to check. If you can ensure the frame rate is set to default, this should help.
As a just in case, I've checked your account to ensure all is well and all is looking good from this end in terms of power levels and input levels on the boxes.
If you continue to have issues, or the setting change above doesn't help - pop back and let us know so we can help further.
Thanks,