Truck imperfect print

So I’m printing parts for the Primo version F on my Creality CR10 right now. I’m printing with black AMZ3D PLA at 0.2mm layer height in my cold 0 C workshop. I had to dial the temperature up to 220 C and the cooling down to 80% and with that I have been getting very good parts.

Until today. The truck I printed today has a layer separation at the thin part of the stepper mount.

It didn’t take much touching for that to come apart completely:

Can I still use this part? Do you have any suggestions for how I can print the next three trucks in a way that avoids this?

Do you have any options in your slicer to allow for thin walls? I know in Prusa slicer there is a setting specifically to make sure walls do not get too thin.

Should be able to use it. This thin part does not hold anything.

For the second truck I’m printing I have slowed the speed down to 30 mm/s. It takes forever, but it looks like it avoids this problem.