Style chooser

guys ...need some confirmation from you all...driving 1.3 efi satria
intend to rev my car from :
1.1st gear 50kmh
2.2nd gear 80kmh
3.3rd gear 120 kmh
4.4th gear 125 - 130 kmh
5.5th gear ..still maintain 125 - 130 kmh
sometimes when i slowly drive from 1st gear to 2nd gear also will face some slipping problem ...
but not always ...
so from the statement above ...the 5th gear am i facing a a clutch slip probleM ? thats why my top speed cannot go any further ?