This is more of a rabbit-hole topic and not really a good fit for a general NVIDIA driver thread. ReBAR and its impact on MSFS 2020/2024 has already been discussed extensively in many dedicated threads, with plenty of testing and analysis.
@A68yoSniper @l3thStHammer @SimPatrouille It’s better to keep this thread focused on NVIDIA drivers in general and continue the ReBAR discussion in a dedicated topic.
Here is one such thread where ReBAR, VRAM usage and overall performance are discussed in depth - I recommend continuing the discussion there:
https://forums.flightsimulator.com/t/rebar-causing-vram-overusage-and-decreases-available-vram-amount-in-msfs-2024/714047
PS: I recently switched from a 2K OLED monitor to 4K OLED and I’m actually curious to test how ReBAR affects VRAM usage in my case. My guess is that VRAM usage may drop by around 0.5 -2GB, but I’ll post any findings in the linked thread.