The second season is pretty meh, but also the source material isn't that great in comparison. Everybody complained about the martial arts tournament and the amount of "filler" (aka everything that wasn't in ONE's version, no need to have that discussion again). However…
The quality is inferior to season 1, with overuse of cheap animation techniques such as lines and colors instead of backgrouns during action scenes, a lot of cuts and zooms or repetitive motions. It feels like they've been strugling to keep the quality of the manga fights instead of improving on them, but I'll wait until I see Garou vs Metal Bat before judging on that.
I think they should bother put the effort in the Post Superfight material, thats what really matters, the tournament can be Berserk 2016 level of bad, at least we could laugh at it.