Desktop client (windows) consumes a lot of CPU

My next cloud desktop client is consuming about 12-15% of CPU continually.
My environment:
Version 2.5.1final (build 20181204)
Intel core i7-4940MX @3.10GHz 3.30 GHz

I have 11GB of data synced between the server and my Windows 7 machine. There are very few file updates to make (once or twice a day at most).

Have I got a configuration error somewhere, or is this unusual behaviour?