Hello, can you please upload your save file, one just before a CL match would be helpful.
https://community.sigames.com/bugtracker/instructions-and-notes/how-to-upload-files-to-us-r98/
Also, can we have your DxDiag file you can see how in the link below:
https://support.sega.com/hc/en-gb/articles/9997195057553-How-to-find-my-system-DxDiag-system-information-for-Football-Manager