Just wanted to share this experience
I bought this new monitor from Iiyama (ProLite E2473HDS).
Surprisingly i bought it for normal everyday PC use but i discovered this monitor supports 50Hz!
I tried this in WinUAE and its Supersmooth scrolling, i still had a slight bit of screen-tearing so i turned on Vsync.
Now the emulator runs in 720x576 (50Hz, Vsync on in fullscreen) and it looks fantastic! just like real amiga smoothness