Hotend Buildup

Im running into issues with My E3D Hotend building up with melted Plastic as it prints. I find im very often needed to try and remove it while it prints with some needle nose pliers.

The buildup is causing problems with it catching on the print and pulling it up.
any advice on settings to prevent the build up.

230 degree hotend
80 degree heat bed.

I use AUto Bed levelling. and it pretty good.
using PEI Sheet over Borsil glass
makerfarm i3v with Alum bed
printing with PET 2.85
using E3D hotend
Bondtech Extruder
.2mm layers
.4 nozzle
60/mms sec
Simplify3d slicer