Hello, tasos1.
Thank you for providing such a thorough and insightful summary of your testing and observations. Your detailed approach and methodical analysis are greatly appreciated, and it’s clear you've invested significant effort into isolating the performance concerns. Your findings around Resizable BAR and the corresponding performance drop when disabled are noted, and your rationale regarding V-Sync and frame caps is valid, especially given the high frame rates you were able to achieve in PUBG under ultra settings. Your conclusion that these settings are unlikely to be the root cause appears sound, particularly in the context of observed GPU underutilization. I also understand that you're no longer able to continue testing due to having passed the GPU on to a friend. While this limits further diagnostics, the additional context you’ve shared, especially regarding low GPU utilization in CS2, improvement in windowed mode, and the use of a 60Hz 1080p monitor with an older HDMI cable, helps paint a more complete picture of the system environment at the time.
At this point, given that the graphics card is no longer available for continued testing, and most critical factors have already been addressed, we will consider the information you’ve provided as part of the case history. Should you reintroduce similar hardware or encounter comparable behavior in the future, feel free to reach out, we’ll be more than happy to assist with a fresh round of troubleshooting.
Best regards,
Von M.
Intel Customer Support Technician