Water masking broken?

I think it got broken somewhere. With addons like orbx pnw pfj or alaska and the tongass addon that come with custom waterclass the ocean boundaries are now sharp lines and squares/tiles instead of soft blendings. I tried unistalling reinstalling the addon areas to no avail. I returned Texture replacements like rex and hifi to the initial backups but it did not help. Also dx10 on/off did nothing. What could be the files responsible for this? Any ideas? Thank you!!