I use Cura and a flash drive with my newer printer. But with my old printer that required being tethered (a Solidoodle2 from 2012) I was using MatterControl, as it was much easier and more reliable than Pronterface which came with the printer.

Though, the old PC I was using struggled when I did anything else on it while it was running the printer. The print speed would actually slow down or occasionally stop when loading a heavy webpage in a browser, for example.

The problem you're seeing is likely related to this bug. There seems to be a lot of overlap in issues with Wayland and slicers. I'm using the AppImage version of the Creality Print slicer, and it suffers the same issue. I have to use the following command line to launch it:
__EGL_VENDOR_LIBRARY_FILENAMES=/usr/share/glvnd/egl_vendor.d/50_mesa.json WEBKIT_FORCE_COMPOSITING_MODE=1 WEBKIT_DISABLE_COMPOSITING_MODE=1 WEBKIT_DISABLE_DMABUF_RENDERER=1 ~/.local/bin/CrealityPrint_Ubuntu2404-V6.2.1.3044-x86_64-Release.AppImage %F

That's all on a single line. Ultimately, I created a .desktop file: ~/.local/share/applications/CrealityPrint.desktop
To run the slicer with that command in the EXEC line and everything works fine. Assuming the modified command to launch the slicer works for you, you should be able to create/modify the .desktop file to launch Orca Slicer similarly.
Desktop File:

[Desktop Entry]
Categories=Utility;
Comment=
Exec= __EGL_VENDOR_LIBRARY_FILENAMES=/usr/share/glvnd/egl_vendor.d/50_mesa.json WEBKIT_FORCE_COMPOSITING_MODE=1 WEBKIT_DISABLE_COMPOSITING_MODE=1 WEBKIT_DISABLE_DMABUF_RENDERER=1 ~/.local/bin/CrealityPrint_Ubuntu2404-V6.2.1.3044-x86_64-Release.AppImage %F
Icon=CrealityPrint
MimeType=model/stl;application/vnd.ms-3mfdocument;application/prs.wavefront-obj;application/x-amf;
Name=CrealityPrint
NoDisplay=false
Path=
StartupNotify=true
Terminal=false
TerminalOptions=
Type=Application
X-KDE-SubstituteUID=false
X-KDE-Username=

Wayland - Viewport doesn't render

Cura Version 5.7.0 Operating System Arch Linux, Hyprland (wayland), nvidia gtx 1060 Printer Creality Ender 5 Reproduction steps Launch the cura flatpak in a wayland compositor (in my case hyprland)...

^{uwumdoescomputershit (GitHub)}

I use orca, ideamaker (for the cr30)

And for resin printing i use chitubox

I think all of them I downloaded the appimage from the repo or their main site.

I'm using Fedora KDE 42 and I found that to run Orca well I had to switch to the flatpak of the nightly builds. It still crashes sometimes, but not very often.

Bambu Studio was stable, but I have ditched it for Orca. I also use Prusa Slicer to run my Klipperized Mk3s. Prusa Slicer has always been rock solid for me no matter the distro or OS.

Lychee and Cura.

Lychee because I always liked the feature set for supports better than Chitubox.

Cura because I spent a couple days comparing prints side by side with Prusa and my printer liked Cura better. It gave me better prints all around. Prusa needed an endless amount of tweaking. I don't mind tweaking but at some point enough is enough.