Making Ubuntu run faster by killing Evolution

Clickbait title, it should be something like "Making Ubuntu run faster by killing Evolution".

Sounds much better. Thanks.

Title is clickbait, but I will take this chance to say something that can literally make many if not most >1 year old computers much faster: Clean the dust off the heatsink(s) and fans. This is hardware 101, but almost no one actually does it and the result is that the processor or GPU starts thermally throttling, with zero warning or indication that it is operating in a handicapped mode beyond that it no longer has the speed it once did.

It's not not the first time I've read about this kind of solutions and processes that get hungry of resources over time, even idle. But this solution gets rid of the symptom not the causes. I'm always curious about this cases and why these happen, I'm not using Ubuntu ATM but I'd look forward for any insights on this.

Gnome software seems to be dismal at handling error conditions.

I solved a similar problem with Gnome on Fedora 25 a few months ago by deleting all of my Gnome Online Account entries. GOA and Evolution's data back end conspired to burn 20% CPU by failing to log into Google account servers multiple times per second. For hours.