Why does my 3D model keep turning out so pixelated and blurry, even when I'm using high-resolution textures and meshes?

I've been in your shoes before, and I totally get how frustrating it can be to deal with pixelated and blurry 3D models. One thing you might want to try is checking your render resolution - even if you're using high-resolution textures and meshes, if your render resolution is set too low, it can still end up looking pixelated. I've found that increasing the render resolution can make a huge difference in the overall quality of the final image.

Another thing to consider is the sampling rate in your rendering settings. If the sampling rate is set too low, it can cause the image to appear blurry or pixelated. I'm not sure what software you're using, but most 3D modeling programs have a setting for this - you might need to dig into the advanced settings to find it. It's also worth checking to see if there are any other settings that could be affecting the image quality, like anti-aliasing or texture filtering.

I'm not sure if it's a hardware issue, but it's possible that your computer's graphics card is struggling to handle the demands of your 3D modeling software. If you're using a mid-range computer, it might be worth trying to reduce the complexity of your scene or breaking it up into smaller sections to see if that improves performance. You could also try updating your graphics drivers to make sure you've got the latest and greatest - sometimes that can make a big difference.

I hope these suggestions help, and I'm happy to try and help you troubleshoot further if you've got any more questions! If you're still having trouble, it might be worth posting some more details about your project, like the specific software you're using and the settings you've tried so far - that way, I or someone else might be able to offer more targeted advice to help you get the results you're looking for.