I've sunk a few hours in today to see if the release patch added any stability and it has in places. The match engine is a little less silly but still a long way off being 'right'. I've still got silly defending, sillier goalkeeping and Theo Robinson is still a god among men.
If anyone does or has already picked this up please, please, please save very regularly. When playing the beta I lost around 2 hours of play due to a random crash and it has just happened to me again tonight. Seems to happen around the transfer window opening/closing although it could be coincidence. Luckily I'd set the autosave to kick in more frequently after the last time so I didn't lose too much progress, but it's definitely something to look out for!