Geeetech

I' d be interested too.

You can't get marlin on that at the moment.

I was saying reducing print speed to 45mm/s and having fans at 100% got me better prints and no more Y shift. Also Reinforced belt tensioner from thingiverse helped I think.

I did. Fan at full speed and print speed around 50%

It enhanced the print quality quite a lot. No more sagging, no more shifting