Importing survey takes forever

@AnnaSofia Which format are you trying to upload the question that you have to generate via Python? If it’s only MC question, TXT format might the the best choice Import & Export Surveys
Also, what’re you trying to do with your research, I believe there’s better way of creating/managing your question like loop&merge

it’s txt. Maybe but loop&merge are not totally clear to me, seem more complicated. It's just multiple choice questions, but a lot of them, and all 1000 need to be in 1 survey

@AnnaSofia Loop & Merge will be way better if your MC questions have something in common (e.g: answer scale) because you only have to take care of a excel file. 
or else
Are your TXT file in TXT Tab Delimited Text format? also, try splitting the file into 50-100 question each and upload it that way to test if you prepared the file in the correct way