A few things to note:
- The issue with Quake 2 is definitely the Microsoft OpenGL Software ICD, which means that it tries to accelerate in software. You obviously don't want that. Either the drivers did not install properly or there's some other shenanigans going on. An easy way to find out is to try out another OpenGL game. I'd download the MDK2 Demo, the launcher for that has an info button that lets you know which OpenGL driver the game will attempt to use. Give it a go.
- What CPU do you own? There is no K6-2 525, there was K6-2 500 and K6-2 533. You either made a mistake on this thread or something isn't set up properly on your system.
- Your video card is indeed a mismatch in a sense. Intel introduced AGP in 1997 with the 440LX for Pentium II systems and the rest of the chipset manufacturers struggled for a few years to get it right. 1998 and 1999 are very rough, by 2000 and late socket 370 and socket A boards, things began to get a lot more stable. As such, for those earlier systems and chipsets, it is generally recommended that you use a PCI videocard or a 3Dfx card (because these did not use any AGP features, they only used the faster bus) if you wish a headache-free experience. If you go with other AGP cards you'll have to do some reading and testing to see what's stable, thankfully your FIC board was a popular choice so you can find threads here with various people figuring out what worked best. I like GeForce2 MX cards, I've had good experiences with them after setting up as many compatibility options as possible, since they also don't draw too much power.
- However, even if you get a more powerful card, it might not be beneficial. I assume you have a K6-2 500, that CPU is roughly on par with a Pentium II 266 or 300. Unless you want higher resolutions, anything faster than a Voodoo2 is going to waste here. This would not be an issue in and of itself, however newer cards came with later, more complex drivers that were designed for newer systems, so they actually end up performing worse than older hardware! Besides performance tweaks for older CPUs and systems, later drivers also tend to break compatibility with older features and games. Your mileage may vary.
I'm not sure if the Rage Fury you ordered is a full Rage 128 Pro (the 16MB VRAM has me thinking it's on a 64bit bus as opposed to 128bit), but either way it should be a better match for your system. Be sure to ask or find out which drivers seem to work the best for the era and also your MVP3 chipset!