Runxel is right and the texture which has all bricks look too similar is not helping either, you can try these options which can help:
- increase the brick size, cheat a bit
- change the brick texture to a texture which has a lot of different bricks even just slight color changes from brick to brick can help. You probably need at least 10 different bricks in the texture ,make sure the texture is large, ( at least 4K ) and not repetitive.
This might not help much but worth a try.
Carsten
www.asmtechbase.com
https://www.youtube.com/asmtechbase
AC 3 to 26 -Windows 7 - 24GB - 8core 4.4Ghz