The game starts at 60fps and over time drops a few fps at a time to a point its running at 30fps and below within 10mins. Ive noticed alot of posts from player on other forums who had this same problem months ago and after purchasing this game in the recent Steam sale, its still present and not addressed by the devs it seems.
Ive tried many different things, changing ingame graphics settings, GPU settings and following advise from other forums but still get the fps drop over time. Auto saves help to restore the fps but eventually that stops working and having to reload the save is the only way to get the fps back to 60 again and then the whole fps drop process starts again, rinse and repeat. This breaks the immersion of the game and spoils it.
Also I can confirm like so many others have also, the game only uses 1 CPU core. I dont know the in and outs of whats going on with this game but ill say how I see it. The game feels like is has not been optimized (employ beta testers and make sure they do their job) to use more than 1 CPU core, hence the 1 core overloads and causes the ingame fps to slow down the more the CPU gets stressed under the pressure.
Ive had the game for only a couple days and found this out myself just by running tests and then read the forum posts and it confirmed everything. So my conclusion is the devs know this problem exists because random joe like myself found it within a couple days playing. Either the devs dont know how to solve the problem or they cant solve the problem, either way the problem isn't being address verbally from what i have read or physically (who knows).
My advice to the devs, just be honest and tell the players if the problem can or cant be fixed and you will at least gain respect for your honesty. If you keep ignoring the complaints of players who bought your game, players will keep asking the same questions over and over again. It will get to the point the questions will stop being asked and players will stop buying any future games you may develop and you can say goodbye to your company. This is the honest truth, if you have a good rep in the gaming community for delivering a quality product you will be remembered and you company will last, if not well thats obvious from past game companies who have come and gone.
Your core game is prefect, realtime exploration with turned based combat is why i followed your game. Old school rpg elements, its all here but your let down by the quality. No point having a sports car if the engine doesnt work, you know what i mean devs.