You did not specify your CPU, GPU, RAM, distro, driver version or kernel version, to allow your results to be put in context, reproduced or compared to others.
Neither did you give graphs or numbers.
Please share this, se we can call it a proper benchmark.
Did your driver update have an impact on your results?
Are you using Neon for benchmarking?
Neon isn’t a great distro for performance especially on recent hardware, since it has oldish kernel and drivers by design (based on Ubuntu LTS).
I would recommend reading https://www.phoronix.com/ for linux benchmarking.
For instance https://www.phoronix.com/review/kde-plasma-6-amd-gaming with a AMD Ryzen 9 7950X system with AMD Radeon RX 7900 XTX graphics on Linux 6.5 + Mesa 23.2 with KDE Plasma 6.0.
The software used to run those benchmarks can be reused locally and are reproducible.
But they don’t as in detail in the games as you did and the variety of rendering pipeline, that’s a nice effort.