The jitter is caused by the lack of floating point unit in Playstation. Some emulators have a more advanced geometry pipeline to fix this and texture distortion, like PXGP feature (implemented on Pete's plugins and Mednafen's forks) or edgbla's gpuBladeSoft.
But those PSX-DC-N64-PC multiplatform games from late-90s in PC are usually 1:1 Playstation ports or emulation in some cases, i think. So they translate the lack of sub-pixel accuracy as is. Some devs rewrote the GTE behaviour and fixed that problem, like Metal Gear Solid Integral.
I dont think it can be fixed through wrappers, its more like a programming problem.