I too used venetubo cfg for some time. Was not happy with the results tbh, stutters all the time. Do try Word Not Allowed's guide. I added just a few entrys to a fresh cfg and my sim has never beed so fluid. ~25 fps in NGX and most Aerosoft sceneries / EGKK UK2000 for example. So indeed I think less tweaks is more in that case. There will always be sceneries that just will not perform at 20+ fps with high end aircraft though, but all in all Word Not Allowed's guide was a gamechanger for me.