Roboflow annotation taking too much CPU

I am trying to annotate a dataset of fish images but as soon as I start annotating 5 to 10 Images my browser (Firefox, I which I am using roboflow ) is using 100% of my laptop CPU resulting in lagging of my browser and roboflow annotater. Anyone had similiar issues can you please help me out?

What image sizes are you working with?

Additionally, what CPU are you operating on? What’s your network speed? And how many other applications do you have running while annotating?