Unfortunately FS2 is one of those games/simulations that only work with Pimay when its 'parallel projection' option is checked. But according to Pimax (https://forum.pimaxvr.com/t/about-60-70-…-rtx2080ti/9072) that option reduces performance by about 30%. Even worse: with Parallel Projection checked FFR (fixed foveated rendering) won't work. Both options combined amount to a performance gain/loss of up to 60% (FFR comes with 3 levels).
Pimax notes that older games are more likely to ask for parallel projection. But FS2 certainly belongs to a modern kind of game (now even with tentative support of Vulcan!), whereas the older DCS 2.5 doesn't need the option and in the wake of that allows for FFR! Is it maybe Unity vs (older versions of) Unreal?
Are devs conscious about that fact and are there any plans of bringing the FS2 graphic engine "up-to-date"?