Kubuntu 22.04 vs Kubuntu 20.04 with stability on nvidia - eviltoast

Hi

I have a laptop with Ryzen 5900 HX and nvidia RTX 3070 GPU with kubuntu 22.04 (kernel 5.15) installed. The thing is I tried to switch the driver from 520 (it freezes quite often on when entering the desktop and sometimes freeze when doing normal activities like browsing) to 440 (lesser freeze But it still happened randomly). the current solution: hard-reset the computer, which is a notoriously bad solution. So, I have an idea by wipeout everything and downgrade to Kubuntu 20.04 which is older. But, I think it is much more stable. Do you think downgrading is good idea?