Masking Lags When Secondary Display Was Last in Survey Mode

This is on a Mac in LR Classic 14.4 but I first noticed it several versions ago.

If I use the secondary display window in Survey mode, and try to do anything in the masking panel, I often get a lot of lag and unresponsiveness with the masking controls. If I switch to a different mode such as Loupe or Grid view for the secondary window, this doesn't happen.

Even if I close the second window, without switching from survey mode, I still get the lag. If I reopen the second window, change it to loupe view, and then close it again, the masking lag goes away. It's like whatever is causing the lag with the survey window is still happening in the background even though the window is closed.

I thought it must be because it's rerendering the previews constantly but it happens even when I am only working on one photo and only in survey mode. When the second window is in loupe view it's also constantly updating the preview but it doesn't lag, even if the single image preview is larger on the screen.

So, I don't really understand what's going on but it's annoying. If I go into survey mode for whatever reason on the second display, then close that window and forget to change it back to loupe or grid view, then later I start working on mask, it will lag and it takes me a minute to realize what is happening. Then I have to reopen the second display, change the view, and close it again so I can continue.