MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I've never printed PLA above 200, 196 for Tianse is my sweet spot. Brand has my favorite green!
I'm sorry but i have not had anything happen like that on my ender-3.
There was a phone stand i printed on my monoprice mini that did stranding like that but it was the file itself corrupting and i fixed it by formatting the memory card. It happened each reprint attempt until i reformatted and re-saved the file. Please let me know if that helps your print or if it continues. If its truly caused by my vent ring it would happen to every print every time and I'd love to fix that if so.