100 fps in Tekken 1 on a Pi 4? My old POS Sempron 140 (with nForce 630a integrated graphics for maximum suckage) barely manages to sit on 60 fps and that's with MAME 0.152! Even with that version I still get the odd stutter in Tekken 1 and 2. Tekken 3 (in non-interlaced 240p mode instead of the default 480i) sits around 83% and Tekken Tag is slower still despite running on the same hardware and at the same resolution.
When a Pi starts trumping one of my PCs I think it's finally time for me to upgrade. That said, it was the weakest "modern" PC I had (by modern, I mean post-Pentium 4 era e.g. having PCI-Express instead of AGP, SATA drives instead of PATA/IDE, and no floppy drive or legacy ports).