Sidekick is pretty well optimized (3-4% additional CPU time on my system), if your fps drops with a lot of other cars on track it usually means you're already on the limit with CPU usage and the app is just a drop that spilled the cup.this app is excellent. but it has an impact on FPS on my computer. It seem to lower FPS by at least 10 FPS when it's a lot of opponents on track. I wonder if its possible to look into that.