I have been regular, everyday user of Signal for over four years. Myself and my friends use it as our primary communication method. In the last two or so years, it has been what I can only describe as "complete and utter shite".

When I send an image to a friend, it can take hours to send a half-megabyte image despite my internet connection being fine. When this happens, none of the consequent messages send. If I close my phone, messages stop sending. So I must violate my privacy by keeping my phone open for sometimes, hours at a time, just to send a stupid little image.

Despite the fact that sending an image will cause consequent messages to be delayed by hours, messages have started, in the last 6 to 12 months, to be sent out of order. This can be disasterous, as a fair number of my friends have depression and other problems, which means (as an example) my "haha" responses can sometimes be seen to be responding to /other/ messages (And yes, I can use the quote function, but sometimes that interrupts the flow of messaging).

This, plus stupid little problems like, backups not being tested to be forward-compatible (something that is ridiculously easy to test, but that they could not be bothered to do), mean that relying on signal is a fool's game at this point.