Hi! Thank you for bumping this, i remember seeing this whilst in mobile but then i lost track of it. so sorry!
The issue here is that you imported the same texture into the bump map and specular. These two textures are composed completely different. The bump map (F85F18101CB0C479) has an specific grey-scale main layer and a different gray tone alpha channel. The specular (C8EC14DFB379BAF6) has a main layer color depending on the type of shine you want to give your object with an alpha channel.
If you'd like a matte bump map and matte specular, then you can grab the textures HERE and import them accordingly. I highly suggest you do your own textures if you want more detail in your objects. It all depends on the project.
Also, i notice that the texture of your object has a very distinctive shading... have you done the texture manually? I suggest checking out THIS BAKING TUTORIAL (the example is a clothing piece but the steps are the same for any mesh) to create a base texture for your object.
Remi, in my case the problem was the one mentioned above, but it may be that in your case it is something else. See if the above explanation helps you.
I was able to solve the problem! with his explanation, I did several tests and adapted to what I needed. The first two images are exaggerated and the cushions that should have been made of fabric were also shiny. The last two pictures, I have already left the mats matte and dim the rest, which seems good now. Thank you for your patience in helping me!
I'm opening the specular texture in photoshop and changing the red and blue channels. saving everything in dds. I even downloaded some objects that had a brightness similar to what I wanted and tried to adjust the colors accordingly, but I did not see any changes.
Thanks for the answer! I have a hard time producing textures, but I've never had a problem with bumpmap overlays. I've been away for a long time without creating objects, and a lot I forgot how to do it. I tried to create textures the way I remembered, but it did not work. Thank you for helping me!
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