@leocg It seems unpredictable! This clears up temporarily after I close Opera and reopen. I could be in the middle of opening another webpage from an open tab, and the screen will go opaque or black. When that doesn't resolve, I will sometimes be successful by doing a ctrl alt delete to bring up task manager from which I close Opera from there. That helps. But it is never a permanent fix. I clear the cached webpages and history, never the cookies though, and that doesn't really help much.
I still think I have reached the limit of my speed dial capacity; I have been accumulating websites there since 2014.
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