ok, 32-bit textures are very frame rate hungry, as is saving without mips, what you need to do is find a balance, most FS9 repaints are in DXT3 format which allows an alpha channel and also allows for quicker texture loading due to the textures being more compressed than 32-bit where theres little to no compression. I am second in command over at AGNT and i know from experience that DXT3 is the repainters favourite there are a few exceptions however to this rule, things like the latest IRIS Sim PC-9 use 32 bit textures, even on my system shes a heavy bird to use. so my advice would be to choose DXT3 over 32-bit, there will be the tiniest modicum of loss of quality but balances out on the performance side.
Hope this helps![]()