What's up with this new format??????

I notice a definite slowdown, both on my pc, tablet and cel. New software must be require more operating resorces, therefore slower overall. I find myself commonly bailing out of threads.due to lack of patiance on waiting for pics to fully load. Also really missing the ability to export conversations for backup purposes, which there is no equivalent to now, but is needed now more than ever due to having to work within the new limit of 15 conversations. Don't get me wrong, I know there are some things that are better, but some core user functionalities I assume/hope are still being worked on and will not be eliminated.