MS auto correct is swapping correctly spelled words for different

these of words, reason auto correct on lumia 950, changes different words, when spelt correctly

slashed becomes smashed

refute / refutes becomes refugees

crowding becomes crossing

nationalised becomes national odd

thriving becomes throwing

decimating becomes decorating

boomed becomes booked

rejoin becomes rebook

mum becomes hum

strives becomes arrived

released becomes release

lobbying becomes lighting

nesting becomes heating

how people supposed work this? :((

there many more, few managed make note of, kind of spell checker changes correctly spelled words different ones?

also, auto correct changes entire words when single letter missing or reversed, eg

decieded becomes recorded, instead of decided

there numerous other examples haven't made note of

its driving me nuts, considering how google @ figuring out words appalling spelling ��

Mobile Devices / Microsoft Lumia and Nokia Lumia / Using Windows 10 on phone

DCHCL