1- cpu: Intel© Core™ i5-3210M CPU @ 2.50GHz × 2
2- i already have 15.6 installed
3- i use it as daily OS “do not know a lot CPU version, etc”
4- when make search find my CPU is “x86_64-v2”, if am not wrong.
5- in country electricity and internet is not stable also the internet speed is small and limited, so online install is very dangerous.
6- so if i understand correct from your words the opensuse leap 16 support legacy.
thanks a lot for you