Hi, I have tested “nGen” filament by ColorFabb.
This is co-polyesters filament and elevated temperature resistance 85c. This is my point of advantage.
Test print setting as followed
Just set temp 220c
And speed 65.
With BuildTak and hair splay.
it seems temp setting is key for printing.
I have tried 230c first but 220c is better for my printer.
Small but 10-15mm long bridge comes clear.
It’s acceptable finish for me.