What's their problem?!

[Maor23]

hey, I've had a problem with my 2 starting central midfielders in the last 5-6 matches, they suddenly started to play like **** without any reason. I mostly play with 2 MCs on the field, but usually I attack down the flanks. anyway I never had them score many goals or assist a lot but they did their job so far, and got good ratings (sometimes 6 but mostly 7-8). anyway all of that changed in the last couple of days, they both made some mistakes causing me to concede and their rating is **** even when they score and assist.

any idea what just happened? or is it just one of the random stuff on this game that come and go away every once in a while to make me go crazy not knowing why?

their stats:






EDIT: just had a league match 10 minutes after writing this post, they both got a 4.