Vivaldi is barely crawling on the way to becoming THE browser and due to usage of crippled Chromium Extensions API you can't do much to improve it
You should move to Waterfox: it does what Mozilla deemed impossible by providing you security updates while still allowing you to use your extensions and will do as long as possible, additionally next gen will bring improvements from Quantum while still allowing powerful extensions to exist (unfortunately some won't work without modifications, but in mainstream Firefox none of them are possible to recreate at all)
Vivaldi is barely crawling on the way to becoming THE browser and due to usage of crippled Chromium Extensions API you can't do much to improve it
You should move to Waterfox: it does what Mozilla deemed impossible by providing you security updates while still allowing you to use your extensions and will do as long as possible, additionally next gen will bring improvements from Quantum while still allowing powerful extensions to exist (unfortunately some won't work without modifications, but in mainstream Firefox none of them are possible to recreate at all)
Very interesting! Downloading... I will definitely try it out. Thanks for the recommendation! :)