Get drivers difference in two versions

I have Dell Vostro laptop having 4 Gb Ram with pre-installed Ubuntu 16.04 in one partion and I have installed Ubuntu 20.04 from official iso as second partion. The Ubuntu 16.04 is working alright but with 20.04 there is some kind of slowness or freezing problem. I feel like there is some I/O driver missing in new system. Is there any way to find which set of drivers each system are running in order to find the problem.