jumping

Hi. I have a problem with my Fazer 600 S2 SA. After warm up to 86 C the idle revs start jumping up (NOT DOWN) about 150 RPM. If I give high revs I observe the same unstable jumping up about 150 RPM even on 6000. Video: https://youtu.be/ZUGRw3ivPrA This may, or may not be connected with me...