This sounds like it's stemming from limited space on your Google Drive account or on your actual phone. We cache your seconds locally and then back them up to your Google Drive account. Could you please take a look at the free space / available storage you have on your Drive and your device (not the SD card). See how much you have and if it's full.
Another option is to try the ADVANCED CLIPPER SCREEN in the settings. Try toggling this on or off. Some devices and updates affect how well this works. Best to toggle it and try again, see if it works.
If you don't see it in the 1SE settings, that's ok. Some devices have it hidden. To reveal these options, press and hold on the “OTHER” heading inside the settings menu of 1SE.
Here's a video on revealing these options: