I have to ask if this is supposed to work with my Ryzen Gen 3 processor system before I mess with a now working system.
I don't have one, so I can't say, for sure, but it is running better than I expected, on every machine that I have installed to See other posts about some operational problems (nothing really serious):
Asus A88XM-A, with A6 processor.
Asus M3A78-EM with quad core Phenom processor.
Lenovo ThinkPad L530 (Intel I5).
Lenovo ThinkPad T510 (Intel I5).
Dell Optiplex GX270, with a single processor. I have 3 GB of memory, and 1 GB is allocated to a RAMDISK. (I am posting from this one). It seems to get very slow, when some other program is running, but by itself, there isn't much difference in performance.
If you have a reasonable configuration, properly installed, with the Pentium4 platform configured for RPM/YUM, it should work. Note, that you can run Dooble alongside of Firefox, even at the same time. There is very little, if any interferrence. I expect that T'Bird, and Seamonkey, would be much the same. Be aware, that running then together can easily fragment upper shared memory space.
Of course, it is always a good idea to have a good backup.