I too am in the process of setting up a new computer with the Nvidia RTX 3080 graphics card. I can run Silent Hunter III no problem on this new computer, but I cannot get ARB Widegui to work -- the display wants to stay in the original 1024x768 resolution with only the lower left hand portion of the ARB Widegui screens displaying. This is a non-StarForce free standing version of SH3 1.4 w/ GWX. The Nvidia 3080 runs DriectX 12, which is supposed to be backward compatible.
Interestingly, I have the exact same setup on a portable with an Nvidia GTX 1050 running DirectX 12 and SH3 with ARB Widegui runs perfectly.
If anyone comes up with a solution to SH3 with ARB Widegui with the Nvidia 3080 RTX, please post your solution here. Thanks.
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