Stringing and missalignments in prints
Hi all,
I'm a palaeontologist and am trying to print some fossils for our research and teaching collections. I've recently come into an issue with my prints, where there are lots of stringing and shifting occurring (see included images). I've tried doing a factory settings reset on everything, changed spools, resliced my files, and am still getting the same print errors. To me, it looks like the filament is not flowing through the nozzle properly, but it seems to flow fine when I run it not during a print. Any advice would be valued.
After midpoint in print the printing started to fail, with progressively more strings and less material extruded and print shifting. 
This is the start of a reprint of the fossil skull with all settings reset after successful benchy. 
This is the start of a reprint of the fossil skull with only filament changed. 
This is the start of a skull print. 
This is directly after a successful benchy with nothing changed.