Printer is printing spongy quality

Hello! I have a friend who has an M5 and it has worked amazing. Last week it started printing this sponge like quality prints and we are both scratching are heads trying to troubleshoot. So far we have tried

Cleaning the nozzle Replacing the nozzle Adjusted the tension Cold pulled Changed multiple types of filament Checked the feeding tube for blockages Tried cooler temps and hotter temps Tried increasing filament extrusion to 1.05

It appears the first few layers are coming out fine to be followed by this weird texture. But also the first few layers have issues tearing apart so it seems to be having adhesion issues.

Has anyone run into an issue like this? Any help would be much appreciated!