I like Slimjet a lot. It's a speedy browser with low memory usage. Perfect especially for older computers. But if I can't watch paid sport channels because of DRM-content not working, there is now point to use this browser any more. I'll stick with Vivaldi and Firefox from now on. But this is not farewell for ever. I'll be back if things get better in near future...

System: HP-250-G6-Notebook-PC
Desktop: KDE Plasma 5.12.7
Kernel: 4.18.0-20-generic x86_64
Distro: Ubuntu 18.04.2 LTS
Graphics: Intel HD Graphics 620