Calc 5.1.5 VERY slow screen refresh

When switching from one window to another, it takes two seconds to refresh a very wide sheet, and one second to refresh a narrower one. Resizing the sheet also exhibits the problemm.

Has anyone else noticed this? 5.1.4 was snappy like all previous versions. Writer doesn’t seem to exhibit the problem.

Are there conditional formats?

No on one sheet, and yes on another. When I close the sheet with the conditional formatting, window refresh in the sheet without conditional formatting is better, but still “jerkier” than in 5.1.4.

Are you using Linux?, maybe in relation with this reported bug

For me, disabling the OPENGL worked.

Tools/Options/Libre Office/View/Use OpenGL for all rendering