old thread, but relevant. I have the same issue in my town house built in 2017. Electric was inspected/Tested during our build process.

CFL bulbs were in the can lights in my basement and i dont recall them dimming unless my laser printer kicked on.

I switched to LED bulbs, specifically cheap daylight bulbs from Walmart (Great Value), which very well might be the issue, but the definitely flicker when hitting a flipper. Ill have to see if it does it when a pop, sling or vuk coil go, ive never really paid attention, but it seems related to the LED bulbs as i didnt notice it with the CFLs.

EDIT: Also, ive never flipped a breaker while playing. I have 2 pins (South Park and TSPP) and a Pac-Man and TMNT cabinet, though rarely are they all on at the same time. I have had everything on at once for a pretty much an entire evening with friends over playing, and never flipped the breaker.

They actually are Dimmable LEDs and I have a dimmer, maybe its the crappy dimmer i installed....

The dimmer I have is for CFLs or LEDs, there is a mode switch on it you have to toggle. I checked it this past weekend as I also noticed the flippers make the CRT monitor on my TMNT and Pac-man cabinets bounce slightly.

Yea i made sure of that lol. The lights were a little annoying, but im more concerned about the CRTs in my Pac-man and TMNT slighting bouncing when i press a flipper button