Closed CPU Usage 100% - freezes and framerate spikes (PC/Steam)

Hi there.
So problem is - when I start stardew valley and loading the game my cpu usage will spike to 100%. Loading times are long and everything seems laggy. Spikes on framerate graph.

I found a solution somewhere on reddit - you need to delete and install XNA framework from steam folder and reboot.

Indeed this fixed all my problems and game works flawlessly. But. Only until the next PC reboot.
After that you need to do all of this again.

I'm on steam. Windows 10 Pro. It is actually a clean install - only 4 days passed.
I don't know what changes after reboot and why reinstalling XNA helps.

Someone has these issues too? And if you do how did you solved it? Thanks.

 

Thank you, I will try that.