New install of 7.5.0

I have installed 7.5.0, but now, when recording, the program does not travel forward. Instead it hesitates and sometimes travels back in reverse, then goes forward for a few seconds. I have tried uninstalling and deleting all ardour config files but cannot get my new install and work properly. What is going on?

I assume this came from this website?
I am also assuming you have tested with a brand new session?

Are you syncing to any external time master (Jack, MTC, etc)?