I added Blue Iris push notifications to Telegram, along with sending an alert image.

I shouldn't get better results from a free chat app than the paid Android app, but that's the current state of the Blue Iris app at the moment...

I'm finding the alerts coming through still to be extremely unreliable and/or delayed, and basically random if an image is sent or not. Like I can drive to work and be walking to my office and then get alerted about myself leaving the house 15mins ago.

Not a great look for a security camera app.

Same here, no push notifications, and CPU usage isn't reported on the Android app either.