in gta sa, the samp installer, putting it in the gta folder, was just renaming the file that worked the hours in game on steam.
this also works on steam in gta sa, (just click to translate when opening the site);
https://www.mixmods.com.br/2019/04/launcher-para-gta-sa-steam/
but in gtaiv I was not able to do this procedure, so I leave this suggestion here to see if there is a solution to account for the hours in game on steam.
(https://i.imgur.com/75tdSBG.jpg)