I have owned the 7DII since it came out and am very happy with the overall performance. I shoot sports very often and have a ton of printable shots. I typically shoot in AI Servo single point to begin and let focusing system track the athletes as they move. I use the default Case # 1 and it has historically performed well with the occasional miss. More recently, however after two years of use, I find it missing much more often even in well lit daytime (baseball) shooting. It seems more jumpy than in the past and seems to leave player to focus on other player or not track quite as well.
I am curious if anyone has run into this issue or heard of it. Also curious if there is a fix or calibration required.