Gothic 3's plethora of bugs may have been addressed since the last time you played. I hadn't touched the game until the 1.74 community patch was released, and even then I still encountered an oddity every so often. Hunting was really, really fun in my eyes, but I also recall getting a little frustrated with the combat system a lot.
It's not so much the bugs I'm talking about. I didn't have much of an issue with those (played recently, a few weeks ago, roughly 50 hours so far, returning later to finish.) It was more of the game not really being made with AB/AAI in mind (in my estimation.) Those were fan-made as well.
For example, some of the NPCs do very little damage to other NPCs when getting in fights. I'm not 100% sure, but I felt that was an issue with the Hard/AB/AAI settings being turned on. The town liberations get a bit odd due to that, with enemies being sponges to an extent, and NPCs fighting for what seemed like forever with very little damage to show for it.
Still, it was fun overall. I think it has more plusses than minuses.
The combat system is actually cool to me. I know that's a minority opinion, but I loved melee. It is hard. You have to have really great timing, even when blocking as it's a timing based block. I liked the Quick Attack and then timing melee swings. It was hard but very satisfying. And the character progression tied into it is utterly satisfying. Every Strength/weapon increase makes a huge difference, i.e. typical PB design.
The archery is a lot of fun. You can get Legolas out there, running and jumping onto rocks, dodging and spinning around for a quick flurry, etc.. Probably the best archery in an open-world RPG I've personally played. But it's also a bit broken, as it can make things too easy, what with the weak pathfinding at times and something else that may actually be an exploit. I guess that was an issue in other open-world RPGs at the time, too, like Oblivion.
I didn't mention this in my last post but there are spawned hunting grounds, too. You'll stumble on herds of wild animals, bison, deer, a rhino here and there, and as you get stronger with better skills you can harvest their trophies, skins and what not, and it makes a big difference on Hard/AB/AAI. That was really great. Being able to kill a deer in one shot after a hefty investment in weapons, the Game Hunter perk and good arrows, rewards you with the much-needed and useful spoils.
The areas Gothic 3 lacks in are the quests. A lot of it is forgettable in terms of the story of them. It does excel in being a sort of, "gathering"/character progression RPG. The quests excel in giving you much-needed resources, and the game overall has a heavy gameplay focus. The story, what's there, is cool. You'll get neat lines a la Gothic 1 & 2 from certain NPCs, human and orcs alike. But the story, dialogue and characters are not the strength of the game, IMO.
If you like the typical Gothic character development that was in Gothic 1 & 2, spanned throughout a very huge open-world with no level-scaling, I'd say definitely give the game a shot. It also lacks a bit of hand-placed loot in the wilderness, i.e. chests have random goods, but I started to appreciate even that as again, it goes back to rewarding you with necessary resources. On Hard/AB/AAI, all of that stuff is very welcomed.
Play on Hard/AB/AAI and it will be very rough but get easier over time. Just be prepared for the weirdness I mentioned (i.e. damage sponges/weird NPC damage among themselves.)