I have a selfwritten tool for graphing stuff on mikrotik routers. After upgrade to 2.9.14 large gaps started to appear in the cpu graphs. I believe this is a routeros issue or some kind of change since it appears on all the machines that have been upgraded and it started just after the upgrade. It only happens for the cpu, other things seem to work flawlessly.
I didnt look much into it. Just want to ask if this is some known issue. If not I can post more info about this.