I'm using Vivaldi(1.3.551.38 (Stable channel) (64bit) on Windows10). This problem occurs since version 1.2 stable. Vivaldi freezes for several minutes when I started Vivaldi just after that. I set display a blank page at the time of Vivaldi start. Some Vivaldi draw a screen and freeze in the state when I input some URL start page. Two windows may sometimes open when I double-click an icon for Vivaldi start once. And Vivaldi freeze for several minutes. I come to be usable without a problem after it when I surpass a freeze state of Vivaldi. "Not Responding" is not displayed to Vivaldi window of this time. I tried uninstallation and a reinstallation of Vivaldi. I tried the safe boot of Windows. How may I solve the issue of this freeze?
Try with a clean profile
Uninstalling/re-installing may not have cleared your profile.
I was improved by the profile re-making.