added pref saving after last mode is set, added extra logging when prefs are saved to see if it is successful or not
added pref saving after last mode is set, added extra logging when prefs are saved to see if it is successful or not

msravi/gfxCardStatus,pajp/gfxCardStatus,2020Deception/gfxCardStatus,pajp/gfxCardStatus,2020Deception/gfxCardStatus,raziel2001au/gfxCardStatus,raziel2001au/gfxCardStatus,2020Deception/gfxCardStatus,msravi/gfxCardStatus,princeofdarkness76/gfxCardStatus,msravi/gfxCardStatus,raziel2001au/gfxCardStatus,pajp/gfxCardStatus,princeofdarkness76/gfxCardStatus,princeofdarkness76/gfxCardStatus