That being said I'll probably spend those 50 certs into making the Sundy a mobile respawn point. It's a great addition for such a low cost.
That's the single most important sunderer upgrade, bro.
Btw I'll try adding one of the cRPG clan members as friend next time I play, I haven't seen even the shadow of anyone with a name close to those I know yet. Casimir's nick is Casimir right ?
About performance : I aim quite shocked I start having FPS lag when I use high settings. I have a HD4870 with 1Gb and I run games like GTA4 with the top notch enb mods like a breeze... of course playing on a 1280x960 screen helps the GC. And if they say it's hard not to have FPS lag with dozens of people being showed, they have no idea of what they are doing, or they are using old technology, or they haven't really concentrated on 3D performance from the start of the project. It's totally understandable to have massive lags/teleports etc. but FPS problems with that kind of quality ? Common... Of course I'm saying this from a computer perspective. As a gamer I don't really mind playing on medium. It doesn't look that bad and certainly not bad enough to repel me.
About investing cert points, choose one suit per class and stick to it, then take the time reduction thing lvl1 for all vehicules. The first level upgrades only cost 1 cert so they are definetly a nobrainer. Then start improving your powers, tools, suits and cooldowns to lvl2, which should all cost 10 certs per upgrade. When that's done you can start looking at scopes and other class upgrades (30 certs), but only if you are sure of the weapon you will be using, which is unlikely.