I've moved this post to Lightroom Classic (since that's what you're using, as shown in your screen shot).
The GPU monitor you're seeing isn't part of Lightroom that I've ever seen. Is it possible you're running some sort of plugin to provide this function? Do you have other equipment attached to LR and running (like a tethered camera?)
Please let us know what version number of Lightroom you're running, as well as any other relevant details.