Hey there @teriff, thank you for taking the time to get in touch, I am sorry to hear that you experienced this issue on Rainbow Six Siege. Please note that this forum is for Rainbow Six Extraction, in the future, can you please create a new thread over on the dedicated game forums if one does not already exist? This helps us avoid going off-topic on different titles.
That said, I have just looked into it from my end, and we are not aware of any driver timeout-related issues on Rainbow Six Siege. Therefore could you please go through this technical troubleshooting article for me ensuring you have completed all of the steps? These steps can help rule out many of the common causes for technical-related issues.
Should you have further questions regarding any of those steps in the article above, or regarding any other issue, please do not hesitate to let me know.