Thunderbird automatically installed the latest version 115.3.3 onto my desktop running Windows 10 Pro 64 bit but ever since it's really slow. When I start it up it takes 15 to 20 seconds before it downloads any emails - the blue prgress bar in the bottom right hand corner takes that long to finish. Then, often, when I send even a simple email it takes ages for it to go once I hit send. Does the new version have lots of bells and whistles that I don't really need and can disable to get it running as it used to? Or is there something I can do to get it working properly again? I'm not really all that technical so simple instructions would be much appreciated. Many thanks, Mark