weird.
I love the flash forge filament :-)

230 is too hot. 210 is the sweet spot. I can print 0.4mm layer at 150mm/s at 210c with a 0.5mm nozzle (that's on my he3d k200 delta though) Never take the replicator clones past 75mms.

sounds more like it might not be gripping it properly. check the filament diameter - could be you've got a duff batch that's a bit thin.

Also check it's not slipped under a strand on the reel. shouldn't have, but can happen.