Also 1,5 could be considered a good ratio for research investment, were with good strategies should work as good as more investment

I do not fully agree. Take into account the fiscal pressure, here is the same. Another thing is that basic investigation is a waste of time if you do not have capacity of developing the possible outcomes from it. So, first develop more in what generates employment, and the current research should be only related to what generates employment and not in what generate easy papers (scientific articles). If not you end doing things that in the academic sense is good, but is of not use. You have to growth your GDP with good investment, it mean, good research too and then expand the expenses in research