LimeSDR mini showing a wobbling with 50+MHz sampling rate and high-ish powered signals

Hello there

I might be crazy, but I believe I didn’t have this problem until a couple of days ago.

When using the limesdr mini above its rated bandwidth for fosphor I get a weird behaviour that can better be explained with a picture, see attached. Keeping the sampling frequency below 50 MHz everything works just fine (and as I said, I believe this only started happening recently).

Does anyone have any suggestions other than decreasing the sampling rate?

Thank you!