Some (many?) CMDRs are reporting seeing considerable performance boosts in Odyssey by doing these (taken from my Reddit megathread):
- Nvidia GeForce: installing the latest drivers, v466.47 (UK version here) helps boost performance for some CMDRs. (thanks /u/Scholander)
- AMD Radeon: installing the latest drivers, v21.5.2 (direct link), helps boost performance for some CMDRs. (thanks /u/Dannyl_Tellen)
- Resetting the game's graphics configuration files helps boost performance for some CMDRs. Backup then delete all files in this folder, which will reset all settings files to defaults: C:\Users\your_user_name\AppData\Local\Frontier Developments\Elite Dangerous\Options\Graphics (thanks /u/Pyran)