The Q45 has a GMA4500 integrated graphics chip
I tested 3.2 & the latest RC 2018.2.3 and found them to use pretty much the same amount of memory with the same scenery & the same aircraft. I tested on a 32bit Win 10 virtual machine with 2 cpu & 2GB ram. Both were useable - the difference here will be that the GMA4500 is taking system ram for graphics & so you have even less than 2G in reality
Things to do to lower cpu usage & memory usage:
- disable AI (when in game go to the menu AI->Traffic and Scenario Settings, then deselect Enable AI Traffic)
- use pre downloaded scenery (you can use TerraMaster or grab 10x10 degree tiles from here
http://ns334561.ip-5-196-65.eu/~fgscene ... 2.0.1.html )
- use scenery version 1 (you can grab 10x10 degree tiles from here
http://www.flightgear.org/legacy-Downlo ... v2.12.html )
- limit the scenery distance in the LOD settings (In the in game menu select View-> Adjust LOD Ranges, bring down Bare to 15000, bring down Rough to 3000 say - it's up to you)
- start with all graphics at lowest settings & everything disabled & slowly increase settings (View->Rendering Options, disable everything, set performance to zero then work from there)
1st things 1st I would get the 2018.2.3 release candidate from here
http://download.flightgear.org/builds/r ... 2.3-rc.exethere is a bug in the current release with terrasync that this RC has fixes for - try it 1st as it fixes major slowdowns on startup for low end windows machines
Try either the default renderer or ALS - ALS can actually be faster depending on the CPU/card combination