Bowling Takes Too Long & Game Laggy with Big Family on Large Lots

Hi I will like to report a bug that I have been noticing with bowling and large family play. With bowling, when I choose Sims to play a game, they will come to the lane but it takes so long to start. And when someone finally start the game, it take so long for the ball to return so they stand around, looking in space and it ruin the gameplay I created and I was wondering if it was bug. I also have a problem with large families on 40x30 lots. It like it run smoothly with a bit of glitch or it sometimes freeze a millisecond compare to a small family on a 30x20 lot, which run perfectly. So I'm confused. I do have some mods so I'm still checking on my end. Just like to report this if it an issue if it not mod related