I print PLA on the Workhorse (using the factory HE 0.5mm head) at 230°C. So it may be that your temps are too low.
230°C sounds high for PLA … but keep in mind you are (a) using 2.85 (3mm) filament and not 1.75 and (b) using a hardened steel nozzle that doesn’t transfer heat as efficiently as a brass nozzle.
Ultimately… each time I use a new filament that I haven’t used before, I print a “Temperature Tower”.
Such as: Smart compact temperature calibration tower by gaaZolee - Thingiverse
You can search Thingiverse for ‘Temperature tower’ and get lots of variations on this. Each section of the model would be printed at a different temperature … and you inspect the quality of each section to decide which one looks best.
It takes a bit of setup. In Cura you set the print temperature based on the temperature of the base layer. Then use: Extensions → Post Processing → Modify G-Code. This opens a sub-window. click ‘Add a script’ and use ‘Tweak at Z or Layer’. Pick either the height (in millimeters) or the layer number where it should change temps. Then click “Tweak Print Speed” and set the new temp.
That changes the temp just once when it reaches that layer.
Then repeat… do another “Add a Script” and add the same script again (Tweak at Z or Layer) and set the layer number and the next temperature change.
And repeat until done.
Run the job through the printer and watch the quality as it goes. The models include features like bridging, overhangs, etc. and often include a feature that you can use to test for strength.
There are loads of variations on the temperature tower (and they come with different temperature layers so if you’re using a material that needs a hotter or cooler temperature range, etc. ) but it’s the best way to help you dial in the printer to the optimal temp for the filament you are using.
Keep in mind two different vendors that make PLA will not necessarily have the same ideal temp. I’ve even seen differences based on changing the color of the PLA from the same vendor. Basically they change the additives in the PLA and that changes the characteristics of how it behaves.
It’s all part of the fun.