i rolled back to version Version 2.1.17 today and have just completed my first successful backup in ten days. phew.
the new version was hanging for ages on the create archive and upload to cloud stages, restarting several times due to inactivity. the progress bar for the upload sometimes stopped on 100%, sometimes on 125%, and once on about 5 billion% (not joking!!). the log always stated that the job had been completed - often after 30-60 minutes, but the archives never materialised in google cloud although all settings were correct.
the rolled back version completed the job in around 15 minutes - still rather slow as i was completing backups in under 120 seconds before - but at least the archives are being uploaded now. later retests completed in 120 seconds.
it looks to me like the update has some issues.... it would be nice to get on top of what they are. it would also be good to hear some suggestions as to why archive creation and upload should sometimes take so long. are these server side or plugin issues ?
i'll be sticking with version Version 2.1.17 for the forseable future.