I just discovered that RT is significantly slower on Windows than on Linux. I tested this on Windows 10, Debian 11 (mainline kernel) and Garuda (Arch) Linux with the Zen kernel. Desktop environment on Linux is Qtile resp. Xfce.
Hardware: Ryzen 7 5800X, 16 GB RAM, Graphics Nvidia Geforce 1660 Super, screen resolution 1920x1200.
I browsed through raws from my Olympus EM5 Mark III (20 megapixels), jumping to the next photo took in average 1.7 sec on Linux and 2.3-2.6 sec on Windows.
It was the same raws that I browsed through, they are on the internal ssd, the default processing profile was applied. RT version is the latest development build from Github (dev branch).
Probably there is a better way to do this but I used my smartphone to measure this, some preinstalled Samsung app. But really there is no need to measure this because the difference is so sicinificant that I can feel it very clearly.
I observed something similar with darktable 1-2 years ago, don’t know if that was fixed meanwhile.
I will probably do more tests with DE’s such as KDE Plasma.
What do you think? Has anybody observed something similar?