Performance in Fedora LXDE

I tested Fedora 42 LXDE on an Acer Chromebook 15 with 4 GB of RAM and 16 GB of hard drive. When I saw the RAM and disk consumption of the installed system, I was surprised The low consumption it had

Getting to the point, the performance was bad. In a YouTube video there were stutters and the CPU with htop showed high figures compared to Debian. With the same environment Chart, I don't know if it's because LXDE is discontinued or try now LXDE with fedora 43 or LXQT