Sorry you're getting a delay when using the remote. I've had this problem myself. The remote was slow and unresponsive at times. I found changing the batteries helped. Can you try that and let me know if it makes any difference.
Thank you, today my hubby switched it off and then back on again, at reboot it said there was an update, we did the update and I have also just this minute put new batteries in, so we will see how things go from now.