Hi. Thanks! I am sure as you say: it is a preview rendering issue. GPU is turned off.
Sorry to say, I don´t know how to rebuild display profile, or how to make sure it is not a V4 spec profile, as you suggest. For now, I am managing by fooling around with the Navigator zoom options. Cheers! .j.
| it is a preview rendering issue. |
To use more precise terminology, it could be corruption in the Camera Raw Cache, which is used in Develop. In LR's terminology, "previews" refer to the previews built for use in Library, which are entirely separate and are not used in Develop.
The most reliable way to rule out a corrupt Camera Raw Cache is to clear it, by going to Preferences > Performance and clicking Purge Cache. You won't lose any edits and you'll only take a mild performance hit as LR slowly rebuilds the contents of the cache incrementally as you edit.