Recorded Videos are loading very slowly on all devices, home and away

I have a video doorbell pro which is hard wired. I've had it with no problems for several years now and recently it is taking a long time to review the recorded videos in my history. I've had this on my iphone and my laptop both on the same network and on other networks. These same devices have been used both in good performance and now in bad. It seems to record fine and plays fine once loaded but the amount of time it takes to load seems to be getting longer even though I'm not storing any more videos. I just want to review what's been recorded and decide to download or delete. Help!