V5 is a little slower to load than V4. Usually I stay logged in under my windows account so this does not effect me often.
That said, when running, it opens charts and goes through the paces at about the same speed.
The HM section does have a small hiccup on loading. Lately the prescription writer has been taking a few seconds longer to load than before (earlier it seemed about the same speed as before.)
I have rarely seen the slower chart opening Tim mentioned. When I did there were other programs running in the background.
IF IT IS A MAJOR PAIN TO UPGRADE, wait until the final version is released. I believe it is close if not formally out (if you go to the log in update section they are on V5.) But I would expect another update may be forthcoming and would probably wait for that one, which may be the official release.
E prescribing is nice and works well. Immunization updates are useful but not perfect. HM will be useful, I am still figuring out how to use them best. Overall, it's still the same program.
