Hye, does anyone else have stutter/lag when going up the right side? It only happens when the helicopter blades go and when I come around the top left. This is the only table I get some lag on, and its only this part of the table.
I too noticed this very strange ball stutter around that location and when the ball is on the very top of the table, and only those 2 locations for me, it was making no sense as when the bal stuttered there , there was nothing happening in term of lighting or special effect. , and visually there seemed to be nothing complex, it was making no sense to me (considering i can run some more intensive tables without trouble).
After lot of testing and setting changes, i managed to get rid of those 2 stutter, as it appears their source is 2 primitives that are high poly (in comparison to how small they are and them being placed above 2 gates, they don't really serve a purpose as i have even tested with deleted them and could play without any trouble on the table) and are set to collidable (i guess to block the gate, but as it's a one way gate they're not really usefull there from my test).
Primitive67 and Primitive46 , they're located there :

To remove any kind of stutter for them, select each of them (you can select them more easily from the list found in Edit -> Select Elements) and for each go to their physics panel and CHECK the "Toy (never collidable)" setting.
Save your changes and you'll have no more ball stutter in both those locations.