Recently I’ve gave up Windows for Linux and installed Ubuntu with KDE Plasma desktop on my pc and laptop from 2007. It’s an i7 Intel processor with 8gb ddr ram so I thought it would be fine, but it seems quite sluggish. What distro could I use that would be faster and still fully functional? Thanks for your help in advance.
If you are an advanced user voidlinux is very good for laptops, in my experience without systemd you have faster boot timings.
+1 Void Linux revived my old ThinkPad very well.
Use the image with XFCE and glibc for the easiest time.