Not only in roads but in rocks and sand that I like more with the custom pack.
I knew about QTP3 Custom Road Texture some time ago and it works nicely.
I can't say about going from Redimized to Reduced since I haven't felt the need to free up any resources like I did when I was getting crashes with the base QTP3. But there is indeed a loss of quality with Redimized. I think it ended up affecting the brick-like stone textures in particular, so that comparison I linked isn't necessarily representative of the overall loss in quality. Really this is only occasionally noticeable, and is probably only a real concern for a handful of textures. I think part of the issue might be the fact that some of the original QTP3 textures are kind of "gawdy" in the sense that they have a lot of depth and in some cases graininess where it would have been better to keep it more subtle, so when you're trying to make the textures and normal maps more "efficient" as Redimized does the results tend to compound the original issues with the textures. It's noticeable in that screenshot comparison, yeah, but on the other hand there are plenty of textures that make the transition just fine. I'm thinking overall that what you lose from Redimized is a tiny tiny little bit of color due to the textures reflecting light more "harshly" in a way, I don't know if that's the textures themselves or the normal maps, though. I think the difference between Redimized and the original textures can be quite noticeable in some places. Ha, I know I said this exact same thing in another thread, I am obsessed with the damn road texture and need to finally upload my new one. I actually have a version uploaded on tesnexus but it shows too much obvious tiling since it's simply the vanilla texture multiplied by four to make it higher resolution. You do realize QTP3 Custom Road Texture is just the vanilla road texture slightly recolored, right? If you read the comments on it you'll see I went from making a Detailed Terrain compatible version of it to saying screw it and making my own.