Re-installation did not help, just as I thought.
GPU usage is on 100% even on an empty sandbox park. Also only 15 FPS there. When I load a premade park like the Kraken Pit I get 10 FPS.
CPU usage stays very low (around 10-15%). When stresstesting my CPU or when doing other CPU intense things, multiple cores are active and the usage goes up to and above 50% easily, so it doesn't seem to be the problem either. :/
Thanks for checking! This does not make any sense to me, though.
The benchmark tests I did all came back with fine results. When playing PC, my CPU usage barely goes up. I'm constantly around 10-15%, that's all the game needs. Still, I do notice that the computer becomes a bit laggy, and the GPU usage goes up to 100% immediately.
Any clues on what to do next? Other tests I can do? I am currently re-installing the game, although I doubt that that will help.
Thanks!
CPU useage at only 15% when you are stress testing? Weird, what are you using to stress test it, and is it set to run 4 to 8 instances, so all the CPU cores are utilized. I'd really recommend to download MSI Afterburner, like I note below. Look at the graphs while the game is running, and see what the CPU is doing, and what the CPU temperature is.
The game dynamically adjusts its settings with the goal of achieving ideal frame rates on any type of hardware. That said if your CPU useage is staying low at 15% and you are having really choppy frame rates something is wrong with your computer. Planet Coaster might only be indicating the issue and not the one to cause it. Below is my experience on my computer, then I have some suggestions on how you can get some more information about your system.
I am using the High profile setting. I have a park made on the map with the big tree. Very basic, with just 5 rides, and the queues. Haven't built any buildings yet. When I load the park, my CPU useage goes up to the range of 60% to 70% and stays that way. I zoomed around and looked at different things and it always just stays right at that range. The game appears very consistent in its CPU useage.
My GPU useage goes up to around 90 to 98%. Depends on what I have in view. If I'm low to the ground with all my rides in view, it jumps to the high 90s, if I have just one ride it is in the 80s. My GPU ram useage at the desktop with no game open is around 600MB, with the game running that goes up to approximately 2.7GBs. People say the game doesn't use the GPU, but these results would indicate that it can use the full GPU.
My FPS depends whether I'm running it full screen or only using 2/3s the screen (have this the forums up and viewable on the right of my monitor. Full screen it appears to be around 45FPS. Using only 2/3rds the screen, it increases to 60FPS. The game feels smooth at all times with my current small park (5 rides).
Random recommendations to pinpoint the problem:
Can you install something like MSI Afterburner so that you can see what your system is doing? Afterburner has a whole bunch of graphs that chart your CPU, GPU, Memory, GPU ram, temperature of CPU and GPU, and other interesting things. Also make sure you CPU isn't getting too hot, Afterburner will tell you how hot your CPU is getting (if at 90C+ and your CPU may be throttling itself). Make sure your GPU is also not getting too hot.
Make sure Windows is set to using the High Performance Power Options mode in the Control Panel Power Options screen -- This is different than the setting in Planet Coaster -- I'm wondering if Windows is somehow throttling your CPU oddly. What happens if you pause your Antivirus?
How many rides do you have in that park? Each ride add 200 people at this time in the Alpha development.
What happens if you save your game under a new name (so you don't ruin your progress), next delete half the rides, and wait for the people to clear out. Is your FPS higher? I would not expect it to double the FPS, but I'd expect some improvement.
Zip up the folder with your Planet Coaster game save in it and upload it to a sharing website and post the link. Then one of us can load up your park and let you know how it runs for us.
Edit: added clarification about the Windows High Performance Power Options mode.
Edit2: I find it awesome that this game is so forward looking. It can scale up to future computer systems people buy. My CPU is 6 cores plus hyperthreading, so it makes me giddy that it can scale up and use it.[up] This is also good news for the people with the newest AMD systems that have 8 cores, or the big spenders who get the Intel 10 core system; this game will be able to use those processors to the max, and get the best park simulation possible out of them.