not sure what kind of form futura you use, but there easyfill abs has an advised temp of 220-270c. With the layer hight and speed you use I think you need to go much hotter. Also closing your machine and lowering fan will help.
Have you tried different temperatures? Maybe go up a little bit?
Are your fans on or off? I would recommend to leave them off for ABS.
Are the joints dimensionally different? Usually ABS has less friction than PLA and therefor joints are easier printed in ABS. But maybe this is not the case for you..
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