squashed marvin

i seem to be squashing my prints but only on small prints i have no problem with bigger prints , I've tried printing marvin twice now in PLA
1st 190 extruder bed at 50 and 50 mm/sec using simplify 3d, 2nd using replicator g at same setting both have done this see video
https://www.youtube.com/watch?v=eU3eIQ8OVGA

any ideas , too much heat ? over extrusion ?

Overall it doesn't look too bad, needs more time to cool between layers. Try printing 2 of them. Some direct airflow like a fan can help also. Maybe try 185 temp.

So i aimed a small fan at the bed and gave it another go and he came out ok

http://i1180.photobucket.com/albums/...psqreo6r1m.jpg