

It may be your setup. I’ve used rustdesk to connect from an Intel with an Nvidia card to an Intel with an AMD card. And from an Intel to An Arm based raspberry pi. From my Android phone to all of them and from them to the Android phone. I’ve never had an issue.
The thing to check out is if you have any firewalls enabled. Much like forwarding ports for remote X sessions. You will have to forward ports for VNC or rust desk
Recently switched a system from arch to tumbleweed. After another required manual update intervention. So far I quite like it. And if as claimed is stable enough to not have me having to troubleshoot updates. I will likely be switching several more. It’s not quite as on the bleeding edge as arch. But it still has plasma 6.4 and blender 4.4 etc which are the big things for me.