TXT and name it ' Commandline.txt ' then copy and paste the following into it exactly how it is -norestriction -nomemrestrict -availablevidmem '1.1' -percentvidmem '100' put the. Good day all i have posted this here today in hope that in following these steps you will be able to get the most out of your GTA IV on any pc if there is anything more i can help with find me on FB ' ö-Stitch Customs-ö ' or email me STEP ONE the 'commandline.txt' make a new.