Nozzle Temp is jumping around

Hello everyone, I have had the following problem with my printer since today. When I heat up my nozzle, everything is fine so far, but as soon as the motors or the axes start moving, the nozzle temperature jumps up and down drastically. Since the temperature changes so quickly, I think it’s just the sensor acting up. Has anyone had this problem before? If so, how can I fix it? I guess the easiest solution would be to get a new sensor, but before I order one, I wanted to ask here if anyone is familiar with this issue. I’m using RatOS 2.1 but its the same problem when I switch to RatOS 2.0.x so that’s not the problem I guess. First I thought maybe about a bug or something like that If you have any questions, please feel free to write to me, and I will provide you with whatever you need. Cheers