Once I launch the latest version of Opera (111.0.5168.55), I must wait for some time before the SpeedDial, as well as the main menu, is loaded and fully responsive.
During that time every action is delayed considereably.
The problem wasn't present in the previous version of Opera.
I have a pretty beefy laptop:
Windows 11 Pro
Ryzen R9 5900HX (8C/16T)
32GB of RAM
RTX 3050Ti Laptop GPU
1TB NVMe drive
Reinstalling Opera and clearing the cache didn't help.
To reproduce the problem just launch Opera with SpeedDial as the starting page.