Both,
I experienced exactly the same problem by using a different sample size than on SQ7 (96kHz) Independent by the number of tracks you choose. Anyway, in some cases it worked for a longer recording time than 3.xx minutes, not reproduceable. We discussed this and we assume that Logic is downsampling in batches in the background using the available RAM and is than trying to save these in packages on your drive (tried different configurations including SSD) and this is where the problem occurs.
After switching to 96kHZ I never had problems again (32 tracks).
Reaper is also working fine. You can easily import your files into Logic from there.
I‘m using a 2012 MacBook Pro, 16GB RAM, 1TB internal SSD.
Best
Axel
