2024 bug: pace/distance wrecked, footpod not working either

Fenix 7s SS: So yeah. since this year all my runs have a massive problem: They are too short and slow. Which is great if you do a running programme with a target time.

Last night at 1km into my run I was 80m behind (route I know and have measured many times with watch and phone app). This got even worse when I switched on my footpod, which has a calibration factor of 1 but makes a very subtle poor signal correction on distance in some parts of my route that makes me 'slow down' in these parts without. By 2km though I was 300m behind and my pace was 2min/km slower than on my phone. Basically, the footpod seems to have slowed me down even more. Have not changed anything on my watch, also not the gps settings. Oddly, the track looks good as always, gps set to auto select still. Changing the calibration factor to 1.05 didn't change much, still too slow. 1.1 finally did the trick. Firmware is still 14.68 as it seems stable for me. Satellite configuration checked with further app: all looks good as usual. I have no idea what might be going on here. Any idea?