Anyway, I feel it is a bit heavy to move from one game to other games. I'm not so sure it is laggy from the site or from my end but it takes around more than half a minute to move from the plinko game to slots.
Seems like it's just your computer or ISP. It should take about three seconds, nobody else has reported this issue. The games are all quite lightweight; the only one that has a significant load is Derby (all the horses take time).