ignisferroque: Im just gonna ignore all this crying...
"yet I can't even play this normaly on lowest settings anymore, but from the beginning I could play this on highest settings without freezing! Of course I'll be expecting from CPDR to tell me why is it like that, when I have done what I could on my end."
The first area (with the griffin fight) is very small, i was able to run it on high too with my old graphics card, once you reach Velen the game is a lot more taxing, with Novigrad (the big city) being the area with the highest demand, due to tons of textures and NPCs, there is nothing wrong with the game, or necessarily your PC, its just too slow to handle it. What might fix it? Not sure, as you didn't tell us your specs but theres a high chance you wont get it to run properly, for Novigrad you'd need a relatively fast processor/enough memory and a good graphics card, probably too expensive to update an older PC.
Jesus! I can play on lowest settings games, which are more demanding than Witcher 3, very good, but then comes Witcher 3, which I should be able to play on mid/low settings, but I can't even run it on low settings! Must be something wrong with the game! Yeah, I see that Intel Core i5-2500k isn't good enough for this game and that minimal requrements they wrote for this game are rubbish, because this CPU was suggested in minimal requirements.
I'm not crying here! I'll repeat this again specially for those, who didn't understood this. My topic is merely a suggestion and I won't cry if somebody will tell me he's going to buy the game anyway! Okay, fine, do whatever you want! Your money! And if this game works for you, then it's very good, I'm happy!
Just stop crying about these rubbish that it's always PC's fault and never game's fault!
elvenpast: Well...imma gonna add to this slighlty pointless discussion and say if your hardware is perfectly fine and so is your game. you have either maleware or some other broken software that's overtaxing your temporary storage. Well...or your coolingsystem is shit....because working fine and then breaking down with time progression? Symptoms of overheat or tempstorage full.
Or you're one gloriously lucky sod and it's both. hurray too you...
No, it's not overhearting! CPU and GPU temperature are like it should be, while I play games.