max transfer is an old setting that is hardley used anymore. old drives would corrupt large files if the setting was too large. newer drives shouldnt have a problem no matter what setting you put.
this is something that resurfaces regularly by people who apparently think it is a problem. do a google search for ifaq or irritatingly fequently asked questions and see what they say about it. they tell you to try every concievable setting and tell them if it makes any difference.
it doesnt (no i didnt try i have ide and scsi tech manuals and protocal docs for drives from 8bit ide scsi to udma 166 eide and ultrawide scsi) cf drives use new protocals while most amiga interfaces use generic settings. safe but slow