after modifing a little the file it loading much faster
FOCUS MK2 1.6 P-2.ods (application/vnd.oasis.opendocument.spreadsheet), 18.70 KB, created by BogdanB on 2018-08-19 18:38:03 UTC
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Creator: BogdanB
Created: 2018-08-19 18:38:03 UTC
Size: 18.70 KB

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Attachments on bug 119362: 144303 | 144309 | 144310 | 144317