On my last 3 flights on the 787-8 (all three just last month), I've felt that suddenly many screens are very laggy, and would not function as a touchscreen when you put the handheld on remote control mode (and also whoever thought it is better to have everything control through the handheld is a horrible person!!).

Interestingly, some seats have IFEs that operate normally, and this is the case in my last 10 flights (before these three recent ones), I thought that the problem may be due to the content update but perhaps not...

and yes, this is all in J