So, as announced yesterday, I replaced Firefox with Opera and these were worlds! Firefox Slow and Boring ( Especially after last update ) Call for new pages only by right-clicking on new tab possible direct call infinitely long or not possible. Have already tried all the ways I can repair Firefox Edge and Opera run at the same calls many times better and faster. For these reasons I will now part with Firefox after a long time ! PS: Since version 50+ it actually got worse and worse, so now long enough written bye bye. Gruß Karl-Heinz