There is a significant lag in the time between I enter a value in the Attributes menu and it actually accepting that value, going through the whole ordeal of redrawing everything, and being done with it to move on. In my street centerlines, I have four rows: L_ADD_TO, L_ADD_FROM, R_ADD_TO, R_ADD_FROM. I put in one value and I've typed this post while I'm waiting to add another one. This has not been an isolated incident and I've been dreading updating my centerlines since I started migrating to Pro because I have a lot of updates this year.
I've also encountered a similar lag issue when entering traverses that are more than just four lines. Drawing creek meanders is far far slower than in ArcMap, for instance, where there can easily be 15+ calls. It appears that Pro is checking through every single line I've entered as soon as I enter another one and it's simply inefficient.