Lightroom Classic: Cache HDR and Panoramic previews

When I create an HDR and use the preview feature to preview 'High deghosting', I have to wait for the system generating the preview - this is expected, fine. However, if I then flick to Medium to compare, I can't go back to High again without it redrawing from scratch again.

Can Lightroom keep a cached preview for each so I can quickly flick between each to compare without having to wait on the system re-generating it each time?