Creality K1 heatcreep issues

I cant anymore.
Since my hotend died the second time, I upgraded to the unicorn nozzle. Now I have heatcreep the whole time arfter installing it. Every print has heatcreep.
I need help, because I cant print stuff.

I print eSun ABS+ and when I print under 400mm/s the the gears can grip the abs anymore since it has defoms on the gears the whole time.

My settingschange was at temps: 260°C → 240°C → 245°C → 250°C → 230°C.
and my printspeed changes were: 150mm/s → 200mm/s → 400mm/s.

It seems that 230mm/s with 230 was having no heatcreep issues, but as soon as it got slower the gears couldnt grip the filamen anymore.
I attached the settings as a image.

Please help me, I can’t anymore