Jagged edges in my heightmap and texture mask?

[Zekhan!]

I've been making a map and no matter what i do I can't seem to get the edges to be more organic. I'm using the airbrush tool, blurring everything (i'm on gimp), but nothing seems to work. My beaches look like this


Is there anything i can do to get it to not have these jagged points?
The dimensions are 17000x2000 with a ocean height of 333

EDIT: my terrain mask also does this and also looks like it's trying to "blend" with the main ground texture, creating these white looking edges. I am using a solid brush but this still happens. how can i fix this?

[SpicyDirt]

When it comes to a map that large, it may bring even the smallest "imperfections" out. Your best bet would be to either try to blur it more or make the map smaller.

[Dark_heart]

I agree with Spicy. It would be more flow in height map to make it right.

[Zekhan!]

When it comes to a map that large, it may bring even the smallest "imperfections" out. Your best bet would be to either try to blur it more or make the map smaller.

I have been blurring the whole thing in gimp but it doesnt seem to be working

[Dark_heart]

Hm. Did you try to make water heigher (If it wouldn't ruin your map)?

[faewyn]

The jagged edges might be from where it is blurred. When you blurr it, there are gaps which might be causing the jagging.

[Zekhan!]

The jagged edges might be from where it is blurred. When you blurr it, there are gaps which might be causing the jagging.

ohhh ty! is there a way to fix it?

[faewyn]

This method will only cause there to be a dropoff but basically erasing the edges and redoing it but with a brush that isn't blurry at all if that makes sense? And when you draw it there will be no way for there to be gaps in between because the blurryness adds the gaps.

However, I just thought about this again and maybe you can try blending up and down instead of side to side. I'm not sure if that will fix it but I hope it helps! Everytime I've been in maps the edges were always a bit weird.

[Zekhan!]

This method will only cause there to be a dropoff but basically erasing the edges and redoing it but with a brush that isn't blurry at all if that makes sense? And when you draw it there will be no way for there to be gaps in between because the blurryness adds the gaps.

However, I just thought about this again and maybe you can try blending up and down instead of side to side. I'm not sure if that will fix it but I hope it helps! Everytime I've been in maps the edges were always a bit weird.

tysm!!!
do u have an idea on how i would fix the problems with the texture mask tho? i can't remember the actual name for it lol

[faewyn]

The texture mask should be what the ground looks like so it won't affect the land or water but just what the ground looks like.