i was using 45.23 drivers (most recommended for ti 4200), and they work fine, but early win 95 titles like "pitfall: mayan adventure", "Lomax" and "toy story" refused to work properly no matter what i do (even on the FX cards), in windowed mode, it struggles under 30fps with screen tearing, in full screen mode it performs much better but exiting back to window mode, it turns the screen black with endless music loop and forces me to restart the pc. in Lomax case the frame rates was under 30fps and gets much worse when the screen gets busy. it took me a while to figure out why it's happening, first i thought the system (board) was too new, too much ram, Direct X 8 ( i know DX 9 breaks some compatibility in win 98), sound card problems, nope. Apparently Nvidia hates palette changes and freaks out when jumping from low resolution to high resolution, and it screws up in the transition, i even deliberately lower the desktop resolution to match the game to see if there's any change, nope, the same thing. i did try different drives all the same no matter what i use.
and with the changes in the Nvidia control settings, i always change AGP to 4x because on default setting (8x) a lot of older titles will not work and even changing the resolution to 1024x768 in some games the performance takes a serious hit (which doesn't make much sense, half of them i was kinda stuck in 800x600), even with disabling V-sync (which make things much worse visually). maybe im doing something wrong but i did follow some guide line and it didn't work in my favor, the card itself was in great condition, i even changed the heatsink to much bigger one, due to being very power hungry card. it's still a great card but didn't work for me. The Radeon 9600XT didn't give me any problems at all, runs very smoothly in 1024x768, manages to run the certain games pitfall, lomax and toy story with no frame dips or crashes, going from windowed to full screen and back, very smooth performance. games like "Shogo" and "Heretic II" plays great in 1024x768 (geforce 4 ti 4200 was struggling in these settings), Using ATI Catalyst 4.2 drivers and they work great with win 98, the ATI Catalyst 6.2 drivers were very unstable under win 98 (at least for me).
about Win XP maybe i would build a nice project, but the real reason i did win 7 build, because my other old gaming pc (was once the family pc running win 10 32-bit) that became my pc after my family bought much better pc, i spent months setting it up (trying to clean as much as possible for storage space on my ssd) with many games up during COVID lockdowns, full of games, was starting to fail and i wanted a fresh windows install on a different board, different SSDs, Operating system like win 7 that's a never has problems with unlike win 10. More organized, clean, less bloat and garbage. Purely a semi-retro gaming pc with more advantage with modern features that's compatible with 32-bit. And on win 7 i can run some much older games without any patches, it took me by surprise.